Kressel, H. &. W. (2015). If you really want to change the world. Harward Business Review Press.
Chicago-referens (17:e uppl.)Kressel, Henry & Winarsky. If You Really Want to Change the World. Boston: Harward Business Review Press, 2015.
MLA-referens (9:e uppl.)Kressel, Henry & Winarsky. If You Really Want to Change the World. Harward Business Review Press, 2015.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.