Gaya APA

Jr., W, D, P, . et al (2012). ESSENTIAL OF MARKETING: A MARKETING STRATEGY PLANNING APPROACH (13th ed). NEW YORK: McGraw Hill.

Gaya MLA

Jr., William, D., Perreault,, . et al. "ESSENTIAL OF MARKETING: A MARKETING STRATEGY PLANNING APPROACH". 13th ed NEW YORK: McGraw Hill, 2012. Text.