Friend, M. A., & Kohn, J. P. (2010). Fundamentals of occupational safety and health (5th ed.). Government Institutes.
Chicago Style (17th ed.) CitationFriend, Mark A., and James P. Kohn. Fundamentals of Occupational Safety and Health. 5th ed. Lanham: Government Institutes, 2010.
MLA citiranjeFriend, Mark A., and James P. Kohn. Fundamentals of Occupational Safety and Health. 5th ed. Government Institutes, 2010.
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