APA

Postman L. J., Egan J. P., . (1949). Experimental psychology: an introduction. New York: Harper.

Chicago

Postman Leo Joseph, Egan James P, . 1949. Experimental psychology: an introduction. New York: Harper.

Harvard

Postman L. J., Egan J. P., . (1949). Experimental psychology: an introduction. New York: Harper.

MLA

Postman Leo Joseph, Egan James P, . Experimental psychology: an introduction. New York: Harper. 1949.