Gaya APA

Perreault, W, D. et al (2008). ESSENTIALS OF MARKETING: A MARKETING STRATEGY PLANNING APPROACH . New York: McGraw-Hill Irwin.

Gaya MLA

Perreault, William, D.. et al. "ESSENTIALS OF MARKETING: A MARKETING STRATEGY PLANNING APPROACH". New York: McGraw-Hill Irwin, 2008. Text.