Primary sources in legal research constitute the actual law itself. In contrast, secondary sources offer commentary, background information, and guidance on the law, often directing researchers to relevant primary sources, though they do not themselves constitute law.
The table below provides examples of each category.
Primary Sources | Secondary Sources |
---|---|
Constitution
|
|
Statutes
Municipal Codes
|
|
Cases
|
|
Rules and Regulations
|
|
Treaties |
Manuals and Guides
|
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Codes
Unlike case law, which is made by judges in specific court cases, statutory law is made by the federal and state legislative branches of government. Statutory law is published in codes. The United States Code (U.S.C.) contains statutes that have been passed by Congress.
Regulations
Electronic Code of Federal Rgulations (Government Printing Office)
Federal regulations refer to the laws created by the different departments and agencies within the executive branch of the U.S. government. These regulations are organized into codes and published regularly in the Code of Federal Regulations (CFR). Database vendors like LexisNexis also provide access to searchable versions of the codes through commercial publishers.
Statutes
Regulations