Kotler, P., Armstrong, G., Ang, S. H., Tan, C. T., Yau, O. H., & Leong, S. M. (2017). Principles of marketing: An Asian perspective (Fourth edition.). England: Pearson Education Limited.

Kotler, Philip, Gary Armstrong, Swee Hoon Ang, Chin Tiong Tan, Oliver Hon-Ming Yau, and Siew Meng Leong. Principles of Marketing: An Asian Perspective. Fourth edition. England: Pearson Education Limited, 2017.

Kotler, Philip, et al. Principles of Marketing: An Asian Perspective. Fourth edition. England: Pearson Education Limited, 2017.