Wentz, C. A. (1998). Safety, health, and environmental protection. Boston, Massachusetts: McGraw-Hill.
Čikaški stil citiranjaWentz, Charles A. Safety, Health, and Environmental Protection. Boston, Massachusetts: McGraw-Hill, 1998.
MLA način citiranjaWentz, Charles A. Safety, Health, and Environmental Protection. Boston, Massachusetts: McGraw-Hill, 1998.
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