Mader, S. S. (2003). Inquiry Into Life (10th edición.). McGraw - Hill Companies, Inc.
Lua i Stíl Chicago (17ú heag.)Mader, Sylvia S. Inquiry Into Life. 10th edición. New York, NY: McGraw - Hill Companies, Inc, 2003.
Lua MLA (9ú heag.)Mader, Sylvia S. Inquiry Into Life. 10th edición. McGraw - Hill Companies, Inc, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.