Styl cytowania APA

Gary, A., & Philip, K. (2008). Principles of marketing. Pearson Education.

Styl cytowania Chicago

Gary, Armstrong, i Kotler Philip. Principles of Marketing. New Delhi: Pearson Education, 2008.

Styl cytowania MLA

Gary, Armstrong, i Kotler Philip. Principles of Marketing. Pearson Education, 2008.