Παραπομπή APA

Poffenberger, A. (1961). Principles of applied psychology. Allied Pacific Pvt. Ltd.

Παραπομπή Chicago Style

Poffenberger, A.T. Principles of Applied Psychology. Bombay: Allied Pacific Pvt. Ltd, 1961.

Παραπομπή MLA

Poffenberger, A.T. Principles of Applied Psychology. Allied Pacific Pvt. Ltd, 1961.