Asfahl, C. R. (2004). Industrial safety and health management (5th ed.). Upper Saddle River, NJ.: Pearson Education.
Παραπομπή Chicago StyleAsfahl, C. Ray. Industrial Safety and Health Management. 5th ed. Upper Saddle River, NJ.: Pearson Education, 2004.
Παραπομπή MLAAsfahl, C. Ray. Industrial Safety and Health Management. 5th ed. Upper Saddle River, NJ.: Pearson Education, 2004.
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