Tull, D. S. (1993). Marketing research (6.). Macmillan Press Ltd.
Chicago Edition CitationTull, Donald S. Marketing Research. 6. Canada: Macmillan Press Ltd, 1993.
MLA Edition CitationTull, Donald S. Marketing Research. 6. Macmillan Press Ltd, 1993.
Warning: These citations may not always be 100% accurate.