National Geographic Society (Washington, D.C.), WQED (Television station : Pittsburg, Pa.), Cobbler, J., Joubert, B., & Joubert, D. (1990). Journey to the forgotten river [videorecording]. The Society.
Lua i Stíl Chicago (17ú heag.)National Geographic Society (Washington, D.C.), Pa.) WQED (Television station : Pittsburg, Jonathan Cobbler, Beverly Joubert, agus Dereck Joubert. Journey to the Forgotten River [videorecording]. Washington, D.C: The Society, 1990.
Lua MLA (9ú heag.)National Geographic Society (Washington, D.C.), et al. Journey to the Forgotten River [videorecording]. The Society, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.