Dyfyniad APA
Kassel, K. (2014). The thinking executive's guide to sustainability (First edition.). Business Expert Press.
Dyfyniad Arddull Chicago
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.
Dyfyniad MLA
Kassel, Kerul. The Thinking Executive's Guide to Sustainability. First edition. Business Expert Press, 2014.
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