Koren, H. (1991). Handbook of environmental health and safety. Principles and practices. Vol. 1 (2nd ed.). Lewis Publishing.
Citácia podle Chicago (17th ed.)Koren, Herman. Handbook of Environmental Health and Safety. Principles and Practices. Vol. 1. 2nd ed. Chelsea: Lewis Publishing, 1991.
Citácia podľa MLA (8th ed.)Koren, Herman. Handbook of Environmental Health and Safety. Principles and Practices. Vol. 1. 2nd ed. Lewis Publishing, 1991.
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