APA aipamena

Keegan, W. (1992). Marketing. Prentice Hall.

Chicago Style aipamena

Keegan, Warren. Marketing. New Jersey: Prentice Hall, 1992.

MLA aipamena

Keegan, Warren. Marketing. Prentice Hall, 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.