Which are examples of secondary sources in legal research?

• A. Constitutions, statutes, and case law are secondary sources.
• B. Administrative regulations are secondary sources.
• C. Treatises, law reviews, and encyclopedias are primary sources.
• D. Treatises, law reviews, and encyclopedias are secondary sources.

Answer: (D)

In legal research, secondary sources are materials that analyze, interpret, summarize, or critique the law rather than create it. The actual laws come from primary sources like constitutions, statutes, and court decisions, and often administrative regulations as well. Secondary sources help you understand and apply those laws by providing explanations, context, and analysis.

Treatises are scholarly works that explain a particular area of law in depth, laying out principles, methods, and how rules are applied. Law reviews publish articles that discuss, critique, and refine legal doctrine, often engaging with recent cases and statutes. Encyclopedias offer concise, structured summaries of legal topics to give you a quick, reliable overview. Because these kinds of materials analyze and synthesize legal rules rather than issuing binding commands, they are considered secondary sources.