APA (7e ed.) Bronvermelding

Hartley, W. H., & Vincent, W. S. (1970). American civics (3rd ed.). Harcourt brace jovanovich.

Chicago (17e ed.) Bronvermelding

Hartley, William H., en William S. Vincent. American Civics. 3rd ed. New York: Harcourt brace jovanovich, 1970.

MLA (9e ed.) Bronvermelding

Hartley, William H., en William S. Vincent. American Civics. 3rd ed. Harcourt brace jovanovich, 1970.