MLA

Kotler, Philip, Gary M Armstrong, and Lloyd C Harris. Principes Van Marketing. 7e her. ed. Amsterdam: Pearson, 2017.

APA

Kotler, P., Armstrong, G. M., & Harris, L. C. (2017). Principes van marketing. 7e her. ed. Amsterdam: Pearson.

Chicago

Kotler, Philip, Gary M. Armstrong, and Lloyd C. Harris. Principes Van Marketing. 7e her. ed. Amsterdam: Pearson, 2017.