Wentz, C. A. (1999). SAFETY, HEALTH, AND ENVIROMENTAL PROTECTION. Mc.Graw-Hill.
Chicago Style (17. basım) AtıfWentz, Charles A. SAFETY, HEALTH, AND ENVIROMENTAL PROTECTION. Mc.Graw-Hill, 1999.
MLA (8th ed.) AtıfWentz, Charles A. SAFETY, HEALTH, AND ENVIROMENTAL PROTECTION. Mc.Graw-Hill, 1999.
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