CROUCH SUNNY. (1996). MARKETING RESEARCH FOR MANAGERS (2ND.). BUTTERWORTH-HEINEMANN.
Chicago Style (17. basım) AtıfCROUCH SUNNY. MARKETING RESEARCH FOR MANAGERS. 2ND. OXFORD: BUTTERWORTH-HEINEMANN, 1996.
MLA (9th ed.) AtıfCROUCH SUNNY. MARKETING RESEARCH FOR MANAGERS. 2ND. BUTTERWORTH-HEINEMANN, 1996.
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