APA-referens (7:e uppl.)

Skidmore, M. J., & Tripp, M. C. (1977). American government: A brief introduction (Second edition.). St. Martin's Press.

Chicago-referens (17:e uppl.)

Skidmore, Max J., och Marshall Carter Tripp. American Government: A Brief Introduction. Second edition. New York: St. Martin's Press, 1977.

MLA-referens (9:e uppl.)

Skidmore, Max J., och Marshall Carter Tripp. American Government: A Brief Introduction. Second edition. St. Martin's Press, 1977.