APA aipamena

Etzel, M. J. (1997). Marketing. New York, NY: McGraw Hill.

Chicago Style aipamena

Etzel, Michael J. Marketing. New York, NY: McGraw Hill, 1997.

MLA aipamena

Etzel, Michael J. Marketing. New York, NY: McGraw Hill, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.