APA-referens

 Lewis, H. (2007).  Are the rich necessary?: Great economic arguments and how they reflect our personal values.  Axios Press.

Chicago-stil citat

 Lewis, Hunter.  Are the Rich Necessary?: Great Economic Arguments and How They Reflect Our Personal Values.  Axios Press, 2007.

MLA-referens

 Lewis, Hunter.  Are the Rich Necessary?: Great Economic Arguments and How They Reflect Our Personal Values.  Axios Press, 2007.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.