Gaya APA

Belch, G, E., belch, M, A. (2004). Advertising and promotion : an integrated marketing communications perspective ed.6 (6). Boston: Mc Graw Hill.

Gaya MLA

Belch, George, E., belch, Michael, A. "Advertising and promotion : an integrated marketing communications perspective ed.6". 6 Boston: Mc Graw Hill, 2004. Text.