Cambridge Educational (Firm), Films for the Humanities & Sciences (Firm), & Infobase. (2007). Amendments 18 and 21: Prohibition and repeal. Infobase.
Chicago Style (17th ed.) CitationCambridge Educational (Firm), Films for the Humanities & Sciences (Firm), and Infobase. Amendments 18 and 21: Prohibition and Repeal. New York, N.Y.: Infobase, 2007.
MLA (8th ed.) CitationCambridge Educational (Firm), et al. Amendments 18 and 21: Prohibition and Repeal. Infobase, 2007.
Warning: These citations may not always be 100% accurate.