Voorhees, J. (1998). International environmental risk management ISO 14000: And the systems approach. Lewis.
Čikaški stil citiranja (17. izdanje)Voorhees, John. International Environmental Risk Management ISO 14000: And the Systems Approach. Boca Raton: Lewis, 1998.
MLA način citiranja (9. izdanje)Voorhees, John. International Environmental Risk Management ISO 14000: And the Systems Approach. Lewis, 1998.
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