GZikmund, W. (2007). Essentials of marketing research (3.).
Chicagoスタイル(17版)引用形式GZikmund, William. Essentials of Marketing Research. 3. Australia, 2007.
MLA(9版)引用形式GZikmund, William. Essentials of Marketing Research. 3. 2007.
警告: この引用は必ずしも正確ではありません.