Cita APA (7a ed.)

Ebbinghaus, H. (1973). Psychology: An elementary text-book. Arno Press.

Cita Chicago Style (17a ed.)

Ebbinghaus, Hermann. Psychology: An Elementary Text-book. New York: Arno Press, 1973.

Cita MLA (9a ed.)

Ebbinghaus, Hermann. Psychology: An Elementary Text-book. Arno Press, 1973.