Cita APA

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

Citación estilo Chicago

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

Cita MLA

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