Cita APA (7a ed.)

RIES, A. (1991). Harse sense: The key to success is.. McGraw-Hill.

Cita Chicago Style (17a ed.)

RIES, Al. Harse Sense: The Key to Success Is.. New York: McGraw-Hill, 1991.

Cita MLA (9a ed.)

RIES, Al. Harse Sense: The Key to Success Is.. McGraw-Hill, 1991.