Bell, M. L., Emory, W., Lapp, C. L., Robinson, J. G., & Trump, R. M. (1966). Essentials of maketing management. Boston: Houghton Mifflin Company.
Παραπομπή Chicago StyleBell, Martin L., William Emory, Charles Leon Lapp, J. George Robinson, και Ross M. Trump. Essentials of Maketing Management. Boston: Houghton Mifflin Company, 1966.
Παραπομπή MLABell, Martin L., et al. Essentials of Maketing Management. Boston: Houghton Mifflin Company, 1966.
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