Hair, J. F. (2006). Marketing Research (13th.). Tata McGraw-Hill Publishing Com. Ltd.
Chicago Style aipamenaHair, Joseph F. Marketing Research. 13th. New Delhi: Tata McGraw-Hill Publishing Com. Ltd, 2006.
MLA aipamenaHair, Joseph F. Marketing Research. 13th. Tata McGraw-Hill Publishing Com. Ltd, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.