Kotler, P. (1996). Principles of marketing (3ª ed.). Prentice Hall.
Chicago Style aipamenaKotler, Philip. Principles of Marketing. 3ª ed. Prentice Hall, 1996.
MLA aipamenaKotler, Philip. Principles of Marketing. 3ª ed. Prentice Hall, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.