Cita APA

Bird, C., & Bird, C. (1940). Social psychology. New York, New York: Appleton Century Crofts.

Citación estilo Chicago

Bird, Charles, y Charles Bird. Social Psychology. New York, New York: Appleton Century Crofts, 1940.

Cita MLA

Bird, Charles, y Charles Bird. Social Psychology. New York, New York: Appleton Century Crofts, 1940.