Introduction to Foreign Legal Research: Secondary Sources

Though secondary sources are undoubtedly valuable research tools for domestic legal research, they are even more valuable for researchers investigating laws outside their home jurisdiction.  Secondary sources may explain foreign legal systems, describe particular foreign legal frameworks, provide citations to relevant foreign law, and sometimes even publish those laws in English.  Consider locating secondary sources that are either jurisdiction- or subject-specific.  Consider, too, searching for comparative law publications offering global or regional discussion of your subject.  In addition to the resources below wherein you can locate books, encyclopedias, treatises, and journal articles, you may find valuable content for free on the web.  Be somewhat wary of resources available for free online, focusing in particular on their currency and source of authority.  Consider focusing your web research on materials published by intergovernmental organizations, non-governmental organizations, and on government websites.


International Encyclopaedia of Laws


vLex offers both primary and secondary materials for more than 130 jurisdictions.  To browse available content for a jurisdiction, select Browse > All Jurisdictions > the appropriate region > appropriate jurisdiction, and browse available books, journals, and blogs.


Westlaw and Lexis

Westlaw and Lexis both provide some books and journals covering foreign law, but researchers should bear in mind that only U.S. content is searchable from the main search bar in these platforms.  As such, researchers may gain a more accurate sense of what is available for their jurisdiction by first selecting:

  • the International Materials link in Westlaw, or
  • or the International tab in Lexis,

and narrowing to their jurisdiction, or searching across international secondary sources. The International Materials Index in Westlaw is another tool that researchers can use to browse both available secondary and primary sources.

Researchers may also wish to explore Westlaw's Practical Law platform, and toggle from the U.S. law default view to Global Home.  Researchers can browse content by practice area or by jurisdiction.