APA-referens (7:e uppl.)
Kassel, K. (2014). The thinking executive's guide to sustainability (First edition.). Business Expert Press.
Chicago-referens (17:e uppl.)
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-referens (9:e uppl.)
Kassel, Kerul. The Thinking Executive's Guide to Sustainability. First edition. Business Expert Press, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.