Zikmund, W. G. (2007). Essentials of marketing research. Mason, OH: Thomson/South-Western.
Chicago Style aipamenaZikmund, William G. Essentials of Marketing Research. Mason, OH: Thomson/South-Western, 2007.
MLA aipamenaZikmund, William G. Essentials of Marketing Research. Mason, OH: Thomson/South-Western, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.