Cita APA (7a ed.)

Sperling, A. P., & Stuart, M. (1981). Mathematics. Made Simple Books.

Cita Chicago Style (17a ed.)

Sperling, Abraham Paul, y Monroe Stuart. Mathematics. Oxford, England: Made Simple Books, 1981.

Cita MLA (8a ed.)

Sperling, Abraham Paul, y Monroe Stuart. Mathematics. Made Simple Books, 1981.