APA-čujuhus (7. p.)
Brown, L. O., & Beik, L. L. (1969). Marketing research and analysis (4th ed.). Ronald Press Co..
Chicago-čujuhus (17. p.)
Brown, Lyndon O., juo Leland Larson Beik. Marketing Research and Analysis. 4th ed. New York: Ronald Press Co., 1969.
MLA-čujuhus (9. p.)
Brown, Lyndon O., juo Leland Larson Beik. Marketing Research and Analysis. 4th ed. Ronald Press Co., 1969.
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