Cita APA

Sperling, A. P. 1., & Sperling, A. P. 1. (1957). Psychology made simple. New York, New York: Made Simple Books.

Citación estilo Chicago

Sperling, Abraham Paul 1912-, y Abraham Paul 1912- Sperling. Psychology Made Simple. New York, New York: Made Simple Books, 1957.

Cita MLA

Sperling, Abraham Paul 1912-, y Abraham Paul 1912- Sperling. Psychology Made Simple. New York, New York: Made Simple Books, 1957.