APA (7th ed.) Citation

Hummel, R. P., & Isaak, R. A. (1980). Politics for human beings (2d ed.). Duxbury Press.

Chicago Style (17th ed.) Citation

Hummel, Ralph P., and Robert A. Isaak. Politics for Human Beings. 2d ed. Monterey, Calif.: Duxbury Press, 1980.

MLA (8th ed.) Citation

Hummel, Ralph P., and Robert A. Isaak. Politics for Human Beings. 2d ed. Duxbury Press, 1980.