Tull, D. S. &. H. D. I. (1960). Marketing Research: Measurment & Method (6.). PHI.
Chicago Style (17th ed.) CitationTull, Donald S & Hawkins Del I. Marketing Research: Measurment & Method. 6. New delhi: PHI, 1960.
MLA (9th ed.) CitationTull, Donald S & Hawkins Del I. Marketing Research: Measurment & Method. 6. PHI, 1960.
Warning: These citations may not always be 100% accurate.