APA način citiranja (7. izdanje)
Kassel, K. (2014). The thinking executive's guide to sustainability (First edition.). Business Expert Press.
Čikaški stil citiranja (17. izdanje)
Kassel, Kerul. The Thinking Executive's Guide to Sustainability. First edition. New York, New York (222 East 46th Street, New York, NY 10017): Business Expert Press, 2014.
MLA način citiranja (9. izdanje)
Kassel, Kerul. The Thinking Executive's Guide to Sustainability. First edition. Business Expert Press, 2014.
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