- •Research Guides
- •Evidence of State practice
- •Records of a State's foreign relations and diplomatic practices
- •Legislation concerning a country's international obligations
- •Resolutions, declarations, and legislative acts of intergovernmental organizations
- •In order to locate references to evidence of customary international law in the above mentioned sources, use the following tools:
- •Digests of international law
- •International Law, Chiefly as Interpreted and Applied in Canada (6th ed., Toronto: Edmond Montgomery, 2000).
- •Repertories
- •Yearbooks of States and of intergovernmental organizations
- •Isil Year Book of International Humanitarian and Refugee Law (New Delhi: Indian Society of International Law, 2001-).
- •International Court of Justice
- •Von Glahn, Law Among Nations: An Introduction to Public International Law (7th ed., Boston: Allyn and Bacon, 1996).
- •Journal Articles
- •Publications of scholarly international law associations
International Law, Chiefly as Interpreted and Applied in Canada (6th ed., Toronto: Edmond Montgomery, 2000).
British Digest of International Law (London, Stevens, 1965-). Covers materials in Foreign Office archives 1860-. Not yet complete.
National Treaty Law and Practice: France, Germany, India, Switzerland, Thailand, United Kingdom (Leigh and Blakeslee, eds., Washington, DC: American Society of International Law, 1995).
National Treaty Law and Practice: Austria, Chile, Colombia, Japan, The Netherlands, United States (Leigh and Blakeslee, eds., Washington, DC: American Society of International Law, 1999).
National Treaty Law and Practice: Canada, Egypt, Israel, Mexico, Russia, South Africa (Washington, DC: American Society of International Law, 2003).
National Treaty Law and Practice: Dedicated to the Memory of Monroe Leigh (Leiden; Boston: M. Nijhoff, 2005). Covers Austria, Canada, Chile, China, Colombia, Egypt, France, Germany, India, Israel, Japan, Mexico, The Netherlands, Russia, South Africa, Switzerland, Thailand, United Kingdom and the United States).
Many countries have web sites for departments or ministries similar to the U.S. Dept. of State. For example, the United Kingdom's Foreign and Commonwealth Office, Australia's Department of Foreign Affairs and Trade, and Germany's Auswärtiges Amt. Information varies from country to country.
Repertories
These are considered the digests of the practice of international organizations.
Repertory of Practice of United Nations Organs (New York: United Nations, 1958-). Comprehensive summary of the decisions of UN bodies, organized by the articles of the UN Charter. Deals with the application and interpretation of the Charter. Kept up with supplements, but nothing new has been issued in quite some time. Available on the UN's web site.
Repertoire of the Practice of the Security Council (New York: United Nations, 1946-). The "ways and means for making the evidence of customary international law readily available." It is an analytical record of the practice of the Security Council. Kept up with supplements. Also available on the UN web site from 1946-2003.
Yearbooks of States and of intergovernmental organizations
In LawCat, search under the subject: international law--yearbooks; international law--periodicals. Yearbooks provide surveys of State practice by treaty and international activities. They may also provide information on national case law involving questions of international law or national legislation concerning matters of international law.
State Yearbooks
African Yearbook of International Law = Annuaire Africain de Droit International (Dordrecht; Boston: M. Nijhoff; Norwell, MA, U.S.A.: Sold and distributed in the U.S.A. and Canada by Kluwer Academic Publishers, 1994-).
Annuaire Européen = European Yearbook (The Hague: Nijhoff, 1955-). French and English. Contains information on various European IGO's (staff, members, activities, documentation).
Annuaire Français de Droit International (Paris: Editions du Centre National de la Recherche Scientifique, 1955-). Table of contents at end. Has table of principle treaties and alphabetical index at end and information on IGO's.
Anuario Mexicano de Derecho Internacional (México, D.F.: Instituto de Investigaciones Jurídicas, Universidad Nacional Autónoma de México, 2001-)
Asian Yearbook of International Law (Dordrecht; Boston: M. Nijhoff; Norwell, MA, U.S.A.: Sold and distributed in the U.S.A. and Canada by Kluwer Academic Publishers, 1993-). Covers issues related to the region and international law.
Australian Year Book of International Law (Sydney: Butterworths, 1966-). Survey of current international law issues and a digest of Australian practice. Also available on HeinOnline.
Baltic Yearbook of International Law (The Hague: Kluwer Law International, 2002-).
British Year Book of International Law (London: H. Frowde: Hodder & Stoughton, 1921-). Substantive articles, case tables, index, list of treaties signed, municipal laws related to international law. Also available on HeinOnline.
Canadian Yearbook of International Law = Annuaire Canadien de Droit International (Vancouver: University of British Columbia Press, 1963-).
Chinese Yearbook of International Law and Affairs (Baltimore: Chinese Society of International Law, 1981-). Articles and state practice relating to international law issues.
Finnish Yearbook of International Law (Helsinki: Ius Gentium Association, 1990-).
German Yearbook of International Law = Jahrbuch für Internationales Recht (Berlin: Duncker & Humblot, 1948-). Table of contents in English; articles in German, French and English. Summarizes work of IGO's. The Max Planck Institute for Comparative Public Law provides the text of German practice from the Yearbook from 1993 -2003 (in German).