Gaya APA

KELLER, K, L., Kotler, P. (2009). Marketing management : 13th edition (13). London: Pearson Prentice Hall.

Gaya MLA

KELLER, KEVIN, LANE., Kotler, Philips. "Marketing management : 13th edition". 13 London: Pearson Prentice Hall, 2009. Text.