Gaya APA

Perreault, W, D. et al (2012). Essentials of Marketing: a marketing strategy planning approach (13th ed.). New York: McGraw-Hill/Irwin.

Gaya MLA

Perreault, William, D.. et al. "Essentials of Marketing: a marketing strategy planning approach". 13th ed. New York: McGraw-Hill/Irwin, 2012. Textbook.