APA-Zitierstil (7. Ausg.)

Key, V. O. (1964). Politics, parties, and pressure groups (5a. ed.). Thomas Y. Crowell.

Chicago-Zitierstil (17. Ausg.)

Key, V. O. Politics, Parties, and Pressure Groups. 5a. ed. Nueva York: Thomas Y. Crowell, 1964.

MLA-Zitierstil (9. Ausg.)

Key, V. O. Politics, Parties, and Pressure Groups. 5a. ed. Thomas Y. Crowell, 1964.