DuBrin, A. J. (1990). Essentials of management (2nd ed.). South-Western.
Tohutoru Kātū Chicago (17th ed.)DuBrin, Andrew J. Essentials of Management. 2nd ed. Cincinnati: South-Western, 1990.
Tohutoro MLA (9th ed.)DuBrin, Andrew J. Essentials of Management. 2nd ed. South-Western, 1990.
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