APA-Zitierstil (7. Ausg.)

Key, V. O. (1958). Politics, parties, and pressure groups (4. ed.). Crowell.

Chicago-Zitierstil (17. Ausg.)

Key, Valdimer O. Politics, Parties, and Pressure Groups. 4. ed. New York, NY: Crowell, 1958.

MLA-Zitierstil (9. Ausg.)

Key, Valdimer O. Politics, Parties, and Pressure Groups. 4. ed. Crowell, 1958.