Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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