Tull, D. S., & Hawkins, D. I. (1987). Marketing research: Measurement and method (4th ed.). Macmillan Publishing ; Collier Macmillan.
Chicago Style (17th ed.) CitationTull, Donald S., and Del I. Hawkins. Marketing Research: Measurement and Method. 4th ed. New York : London: Macmillan Publishing ; Collier Macmillan, 1987.
MLA (9th ed.) CitationTull, Donald S., and Del I. Hawkins. Marketing Research: Measurement and Method. 4th ed. Macmillan Publishing ; Collier Macmillan, 1987.
Warning: These citations may not always be 100% accurate.