Lua APA (7ú heag.)
Hefley, J., & Hefley, M. (1972). Down over Amazonia: The story of Wycliffe Bible Translators in Peru. Word Books Publishers.
Lua i Stíl Chicago (17ú heag.)
Hefley, James, agus Marti Hefley. Down over Amazonia: The Story of Wycliffe Bible Translators in Peru. Texas: Word Books Publishers, 1972.
Lua MLA (9ú heag.)
Hefley, James, agus Marti Hefley. Down over Amazonia: The Story of Wycliffe Bible Translators in Peru. Word Books Publishers, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.