Tull, D. S., & Hawkins, D. I. (1993). Marketing research: Measurement and method: a text with cases (6 edition.). PHI Learning.
Chicago Edition CitationTull, Donald S., and Del I. Hawkins. Marketing Research: Measurement and Method: A Text with Cases. 6 edition. New Delhi: PHI Learning, 1993.
MLA Edition CitationTull, Donald S., and Del I. Hawkins. Marketing Research: Measurement and Method: A Text with Cases. 6 edition. PHI Learning, 1993.
Warning: These citations may not always be 100% accurate.