Treaty citations, signatories, parties, dates, status, etc.Soft lawU.S. is a partyUnited Nations & League of Nations treatiesUnited Nations CharterMore multilateral, special subject, bilateral, non-U.S., & unofficial sourcesWhere to look for commentaries & travaux préparatoires (drafting history)
BITS: Bilateral investment treatiesICSID, UNCITRAL, NAFTAInternational investment cases & awards
Citation and abbreviationsFinding books and articlesMore encyclopedias; dictionaries, directories, research guidesNewspapers, discussion, etc.Statistics
The practice of international law by other statesU.S. practice of international law
Case law on human rights, generallyCharter of Fundamental Rights of the European UnionEuropean Convention on Human Rights (Council of Europe & Eur. Ct. H.R.)Inter-American Commission & CourtUnited Nations, ILO, etc.
ICJ and PCIJU.S. cases on international law
United NationsOther IGOs
This is the "Sources, ICJ Statute, UN Charter" page of the "International Law Research" guide.
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International Law Research  

This guide lists the major print and online sources for researching international law. ***IMPORTANT: The main tabs have general sources not listed under the drop-down menus. Links go to online sources or to more information about print sources.
Last Updated: Jun 27, 2014 URL: Print Guide RSS Updates

Sources, ICJ Statute, UN Charter Print Page

Restatement of Foreign Relations

See also Section 103 (2) of the Restatement of the Law (Third), The Foreign Relations of the United States. The Restatement presents U.S. law as stated by the American Law Institute. B1 and Reserve KF395.A2 F63T3 1986.

The Restatement Third is searchable in WESTLAW  REST-FOREL (requires a password). A "link to new citations" appears at the top of the document if there are newer cases for the section that you are reading.


You may also need to research "foreign" law.

You may need to research the law of an individual country, for example, If your international law issue or transaction involves nationals or companies from multiple jurisdictions, or if you are researching customary international law. The law of a country other than your own often is referred to as "foreign law," "municipal law" or "domestic law." See the Foreign Law tab for suggested resources.


Statute of the ICJ, art. 38(1), sources of international law

      1. The Court, whose function is to decide in accordance with international law such disputes as are submitted to it, shall apply:

a. international conventions, whether general or particular, establishing rules expressly recognized by the contesting states;

b. international custom, as evidence of a general practice accepted as law;

c. the general principles of law recognized by civilized nations;

d. subject to the provisions of Article 59, judicial decisions and the teachings of the most highly qualified publicists of the various nations, as subsidiary means for the determination of rules of law.

ICJ Statute: citation and commentary

The Statute of the International Court of Justice appears at the end of the Charter of the United Nations.
Citation example: Statute of the International Court of Justice, art. 38, para. 1.


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