Primary Sources- In law, a primary source is the original source of the law itself. Primary sources include statutes, government regulations, case law and the Constitution.
SEE: Cases, Statutes and Codes, Regulations, Opinions.
Secondary Sources - Secondary sources analyze, compile, discuss, explain and interpret the law. Secondary sources include treatises, encyclopedias, legal dictionaries, law review articles, books, magazines, journals and similar sources. A quality secondary source can be very helpful as a resource for research and can be very persuasive if used in court. However, whenever you use a secondary source you should check the relevant primary sources to make sure that the secondary source is and remains accurate and relevant. Secondary sources often are the best place to begin legal research.
SEE: Legal Encyclopedias, Practice Guides, American Law Reports, Law Reviews, Law Journals.