Churchill, Gilbert A. Basic marketing research / Gilbert A. Churchill, Tom J. Brown - 5th ed. - Mason, Ohio : South-Western, c2004 - xxvii, 738 p. : ill. ; 29 cm. ISBN: 0324190972 Subjects--Topical Terms: Marketing research. Subjects--Index Terms: Marketing Quản trị kinh doanh Tiếp thị Dewey Class. No.: 658.8/3