Lua APA (7ú heag.)
Hartley, W. H., & Vincent, W. S. (1970). American civics (3rd ed.). Harcourt brace jovanovich.
Lua i Stíl Chicago (17ú heag.)
Hartley, William H., agus William S. Vincent. American Civics. 3rd ed. New York: Harcourt brace jovanovich, 1970.
Lua MLA (9ú heag.)
Hartley, William H., agus William S. Vincent. American Civics. 3rd ed. Harcourt brace jovanovich, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.