Sanchez, C. A. (1978). Psychology applied to business and industry. National Book Store.
Chicago-referens (17:e uppl.)Sanchez, Custodiosa Ancheta. Psychology Applied to Business and Industry. Manila: National Book Store, 1978.
MLA-referens (9:e uppl.)Sanchez, Custodiosa Ancheta. Psychology Applied to Business and Industry. National Book Store, 1978.
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