Friend, M. A., & Kohn, J. P. (2014). Fundamentals of occupational safety and health (Sixth edition.). Bernan Press.
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Chicago-čujuhus (17. p.)
Friend, Mark A., juo James P. Kohn. Fundamentals of Occupational Safety and Health. Sixth edition. Lanham, Maryland: Bernan Press, 2014.
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MLA-čujuhus (9. p.)
Friend, Mark A., juo James P. Kohn. Fundamentals of Occupational Safety and Health. Sixth edition. Bernan Press, 2014.
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