Mandell, M. I. (1981). Marketing (2nded.). Prentice-Hall.
Tohutoru Kātū Chicago (17th ed.)Mandell, Maurice I. Marketing. 2nded. Englewood Cliffs: Prentice-Hall, 1981.
Tohutoro MLA (9th ed.)Mandell, Maurice I. Marketing. 2nded. Prentice-Hall, 1981.
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