Freeman, M. S. (2009). Rourke's World of Science ENCYCLOPEDIA: Volume 1 Human Life. Rourke Publishing.
Lua i Stíl Chicago (17ú heag.)Freeman, Marcia S. Rourke's World of Science ENCYCLOPEDIA: Volume 1 Human Life. Rourke Publishing, 2009.
Lua MLA (8ú heag.)Freeman, Marcia S. Rourke's World of Science ENCYCLOPEDIA: Volume 1 Human Life. Rourke Publishing, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.