APA (7. basım) Alıntı

Spencer, H. (1970). The principles of psychology. Gregg International Publishers Limited.

Chicago Style (17. basım) Atıf

Spencer, Herbert. The Principles of Psychology. Farnham: Gregg International Publishers Limited, 1970.

MLA (9th ed.) Atıf

Spencer, Herbert. The Principles of Psychology. Gregg International Publishers Limited, 1970.