Hammer, W., & Price, D. (2001). Occupational safety management and engineering (5th ed.). Upper Saddle River, NJ.: Prentice Hall.
Παραπομπή Chicago StyleHammer, Willie, and Dennis Price. Occupational Safety Management and Engineering. 5th ed. Upper Saddle River, NJ.: Prentice Hall, 2001.
Παραπομπή MLAHammer, Willie, and Dennis Price. Occupational Safety Management and Engineering. 5th ed. Upper Saddle River, NJ.: Prentice Hall, 2001.
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