Hawkins, D. I. (2002). Marketing research: Measurement & method. Macmillan Publishing Company.
Chicago Style aipamenaHawkins, Del I. Marketing Research: Measurement & Method. Macmillan Publishing Company, 2002.
MLA aipamenaHawkins, Del I. Marketing Research: Measurement & Method. Macmillan Publishing Company, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.