Cita APA (7a ed.)

(1980). Philadelphia Communists, 1936-1956. Colibri.

Cita Chicago Style (17a ed.)

Philadelphia Communists, 1936-1956. Bogotá: Colibri, 1980.

Cita MLA (8a ed.)

Philadelphia Communists, 1936-1956. Colibri, 1980.