APA Style

Armstrong, G. et al (2017). Principles of Marketing by Gary Armstrong, Stewart Adam, Sara Denize, Michael Volkov, Philip Kotler (13th ed.). : Pearson Education Australia.

MLA Style

Armstrong, Gary. et al. "Principles of Marketing by Gary Armstrong, Stewart Adam, Sara Denize, Michael Volkov, Philip Kotler". 13th ed. : Pearson Education Australia, 2017. Text.