APA
Kotler P., Armstrong G., . (2006). Principles of Marketing. N.Delhi: .
Chicago
Kotler Philip, Armstrong Gary, . 2006. Principles of Marketing. N.Delhi: .
Harvard
Kotler P., Armstrong G., . (2006). Principles of Marketing. N.Delhi: .
MLA
Kotler Philip, Armstrong Gary, . Principles of Marketing. N.Delhi: . 2006.