APA
Kotler P. a. A. G., . (2008). Principles of Marketing. Delhi: Pearson Education.
Chicago
Kotler Philip and Armsbrony Gray, . 2008. Principles of Marketing. Delhi: Pearson Education.
Harvard
Kotler P. a. A. G., . (2008). Principles of Marketing. Delhi: Pearson Education.
MLA
Kotler Philip and Armsbrony Gray, . Principles of Marketing. Delhi: Pearson Education. 2008.