APA
Kotler P. a. A. G., . (1999). Principles of Marketing. : PHI.
Chicago
Kotler Philp and Armestrong Gray, . 1999. Principles of Marketing. : PHI.
Harvard
Kotler P. a. A. G., . (1999). Principles of Marketing. : PHI.
MLA
Kotler Philp and Armestrong Gray, . Principles of Marketing. : PHI. 1999.