Cita APA (7a ed.)

Hill, N. (1977). Success through positive mental attitude. Pocket book.

Cita Chicago Style (17a ed.)

Hill, Napoleon. Success Through Positive Mental Attitude. New York: Pocket book, 1977.

Cita MLA (9a ed.)

Hill, Napoleon. Success Through Positive Mental Attitude. Pocket book, 1977.

Precaución: Estas citas no son 100% exactas.