International & Foreign Legal Research: Writing & Style Guides

• Guide to Foreign and International Legal Citations
  Created by the NYU Journal of International Law and Politics.
  Call Number: K89 .G85 2009
• Cardiff Index to Legal Abbreviations

  The best free online source, this site primarily covers law reports and law periodicals in English, but major foreign language law publications are also included.

Bluebook

The Bluebook: A Uniform System of Citation, 21st ed. (2020). You can also find the Bluebook online here.
The rules provide citation suggestions for foreign and international materials, with specific examples found in the Tables:

• Rule 20: Foreign Materials
• Rule 21: International Materials
• T.2: Foreign Jurisdictions
• T.3: Intergovernmental Organizations
• T.4: Treaty Sources
• T.5: Arbitral Reporters