Cita APA (7a ed.)

Postman, L. J., & Egan, J. P. (1949). Experimental psychology: An introduction. Harper.

Cita Chicago Style (17a ed.)

Postman, Leo Joseph, y James P. Egan. Experimental Psychology: An Introduction. New York: Harper, 1949.

Cita MLA (9a ed.)

Postman, Leo Joseph, y James P. Egan. Experimental Psychology: An Introduction. Harper, 1949.