Cita APA (7a ed.)

Heaton, H., & Johnson, A. (1948). Socialism in Western Europa. New York: Foreign Policy Association.

Cita Chicago Style (17a ed.)

Heaton, Herbert, y Alvin Johnson. Socialism in Western Europa. New York: Foreign Policy Association, 1948.

Cita MLA (8a ed.)

Heaton, Herbert, y Alvin Johnson. Socialism in Western Europa. New York: Foreign Policy Association, 1948.