Παραπομπή APA

McDougall, W. (1968). Outline of psychology. Methcien & Com.

Παραπομπή Chicago Style

McDougall, William. Outline of Psychology. London: Methcien & Com, 1968.

Παραπομπή MLA

McDougall, William. Outline of Psychology. Methcien & Com, 1968.