APA
Kotler P. &. A. G., . (1992). Principles of marketing. Prentice Hall of india Private Limited, New Delhi: .
Chicago
Kotler Philip & Armstrong Gary, . 1992. Principles of marketing. Prentice Hall of india Private Limited, New Delhi: .
Harvard
Kotler P. &. A. G., . (1992). Principles of marketing. Prentice Hall of india Private Limited, New Delhi: .
MLA
Kotler Philip & Armstrong Gary, . Principles of marketing. Prentice Hall of india Private Limited, New Delhi: . 1992.