Gaya APA

Belch, G, E., Belch, M, A. (2018). Advertising and promotion : an integrated marketing communications perspective (11th ed.). New York: McGraw Hill Education.

Gaya MLA

Belch, George, E.., Belch, Michael, A.. "Advertising and promotion : an integrated marketing communications perspective". 11th ed. New York: McGraw Hill Education, 2018. Text.