Heller,Robert, & Hindle,Tim. (2008). Selling successfully. Dorling Kindersley.
Citación estilo ChicagoHeller,Robert, and Hindle,Tim. Selling Successfully. London: Dorling Kindersley, 2008.
Cita MLAHeller,Robert, and Hindle,Tim. Selling Successfully. Dorling Kindersley, 2008.
Warning: These citations may not always be 100% accurate.