Kotler Philip. (2014). Principles of Marketing (15th.). Pearson.
Chicago Style aipamenaKotler Philip. Principles of Marketing. 15th. Noida: Pearson, 2014.
MLA aipamenaKotler Philip. Principles of Marketing. 15th. Pearson, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.