Breen, G. E., & Blankenship, A. B. (1982). Do-it-yourself marketing research (Second edition.). McGraw-Hill Book Company.
Citace podle Chicago (17th ed.)Breen, George Edward, a Albert Breneman Blankenship. Do-it-yourself Marketing Research. Second edition. New York: McGraw-Hill Book Company, 1982.
Citace podle MLA (9th ed.)Breen, George Edward, a Albert Breneman Blankenship. Do-it-yourself Marketing Research. Second edition. McGraw-Hill Book Company, 1982.
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