Gaya APA

PERREAULT, W, D. et al (2012). Essentials of marketing. A marketing strategy planning approach (ed.13). New York: McGraw-Hill Book Company.

Gaya MLA

PERREAULT, William, D.. et al. "Essentials of marketing. A marketing strategy planning approach". ed.13 New York: McGraw-Hill Book Company, 2012. Text.