APA-referens (7:e uppl.)

ebrary, Inc, & Sorrell, L. A. (2010). Colombia: U.S. relations and issues. Nova Science Publishers.

Chicago-referens (17:e uppl.)

ebrary, Inc, och Landen A. Sorrell. Colombia: U.S. Relations and Issues. New York: Nova Science Publishers, 2010.

MLA-referens (9:e uppl.)

ebrary, Inc, och Landen A. Sorrell. Colombia: U.S. Relations and Issues. Nova Science Publishers, 2010.