APA (7th ed.) Citation

Paczkowski, T., Kotler, P., & Armstrong, G. (1991). Principles of marketing [by] Philip Kotler, Gary Armstrong, fifth edition: Study guide. Prentice Hall.

Chicago Style (17th ed.) Citation

Paczkowski, Thomas, Philip Kotler, and Gary Armstrong. Principles of Marketing [by] Philip Kotler, Gary Armstrong, Fifth Edition: Study Guide. Englewood Cliffs, N. J: Prentice Hall, 1991.

MLA (9th ed.) Citation

Paczkowski, Thomas, et al. Principles of Marketing [by] Philip Kotler, Gary Armstrong, Fifth Edition: Study Guide. Prentice Hall, 1991.