APA (7th ed.) Citation

P Kotler, G. A. &. M. O. Principles of Marketing.

Chicago Style (17th ed.) Citation

P Kotler, G Armstrong & M Opresnik. Principles of Marketing.

MLA (8th ed.) Citation

P Kotler, G Armstrong & M Opresnik. Principles of Marketing.

Warning: These citations may not always be 100% accurate.