Gaya APA

PERREAULT, W, D. et al (2012). Essentials of Marketing : A Marketing Strategy Planning Approach (Ed. 13). New York: McGraw-Hill.

Gaya MLA

PERREAULT, William, D.. et al. "Essentials of Marketing : A Marketing Strategy Planning Approach". Ed. 13 New York: McGraw-Hill, 2012. Text.