Παραπομπή APA

Underwood, B. J. (1957). Psychological research. Appleton-Century-Crofts.

Παραπομπή Chicago Style

Underwood, Benton J. Psychological Research. New York: Appleton-Century-Crofts, 1957.

Παραπομπή MLA

Underwood, Benton J. Psychological Research. Appleton-Century-Crofts, 1957.