APA-Zitierstil (7. Ausg.)

Key, V. O. (1950). Politics, parties, and pressure groups (2. ed., 4. print.). Crowell.

Chicago-Zitierstil (17. Ausg.)

Key, Valdimer O. Politics, Parties, and Pressure Groups. 2. ed., 4. print. New York: Crowell, 1950.

MLA-Zitierstil (9. Ausg.)

Key, Valdimer O. Politics, Parties, and Pressure Groups. 2. ed., 4. print. Crowell, 1950.