Cita APA (7a ed.)

Carr, H. A. (1925). Psychology: A study of mental activity. Longmans, Green and Co.

Cita Chicago Style (17a ed.)

Carr, Harvey A. Psychology: A Study of Mental Activity. New York ; Chicago ; Boston ; Toronto: Longmans, Green and Co, 1925.

Cita MLA (9a ed.)

Carr, Harvey A. Psychology: A Study of Mental Activity. Longmans, Green and Co, 1925.