Gaya APA

PERREAULT, W, D., McCarthy, E, J. (2003). ESSENTIAL OF MARKETING : A Global-Managerial Approach / William D. Perreault. (9th ed). Canada: McGraw Hill.

Gaya MLA

PERREAULT, William, D.., McCarthy, E., Jerome. "ESSENTIAL OF MARKETING : A Global-Managerial Approach / William D. Perreault.". 9th ed Canada: McGraw Hill, 2003. Text.