International Academy of Proctology. (2004). American Journal of Proctology, Gastroenterology and Colon and Rectal Surgery. McMahon.
Chicago-referens (17:e uppl.)International Academy of Proctology. American Journal of Proctology, Gastroenterology and Colon and Rectal Surgery. New York: McMahon, 2004.
MLA-referens (8:e uppl.)International Academy of Proctology. American Journal of Proctology, Gastroenterology and Colon and Rectal Surgery. McMahon, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.