Crognale, G. (1999). Environmental management strategies: The 21st century perspective. Prentice Hall PTR.
Čikaški stil citiranja (17. izdanje)Crognale, Gabriele. Environmental Management Strategies: The 21st Century Perspective. Upper Saddle River, N.J: Prentice Hall PTR, 1999.
MLA način citiranja (9. izdanje)Crognale, Gabriele. Environmental Management Strategies: The 21st Century Perspective. Prentice Hall PTR, 1999.
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