Cita APA (7a ed.)

Murphy, J. D. (1966). Secrets successful selling ([8a. ed.].). Dell.

Cita Chicago Style (17a ed.)

Murphy, John D. Secrets Successful Selling. [8a. ed.]. New York: Dell, 1966.

Cita MLA (9a ed.)

Murphy, John D. Secrets Successful Selling. [8a. ed.]. Dell, 1966.