Tull, D. S. (1993). Marketing research (6.). Macmillan Press Ltd.
Chicago Edition CitationTull, Donald S. Marketing Research. 6. Canada: Macmillan Press Ltd, 1993.
MLA引文Tull, Donald S. Marketing Research. 6. Macmillan Press Ltd, 1993.
警告:這些引文格式不一定是100%准確.