Cita APA (7a ed.)

Heller,Robert, & Hindle,Tim. (2008). Selling successfully. Dorling Kindersley.

Cita Chicago Style (17a ed.)

Heller,Robert, y Hindle,Tim. Selling Successfully. London: Dorling Kindersley, 2008.

Cita MLA (8a ed.)

Heller,Robert, y Hindle,Tim. Selling Successfully. Dorling Kindersley, 2008.