V.kumar, David A aaker, & George S.day. (1999). Essentials of marketing research. John wiley and sons.
Chicago Edition CitationV.kumar, David A aaker, and George S.day. Essentials of Marketing Research. New york: John wiley and sons, 1999.
MLA Edition CitationV.kumar, et al. Essentials of Marketing Research. John wiley and sons, 1999.
Warning: These citations may not always be 100% accurate.