National Geographic Society, WQED (Television station : Pittsburg, Pa.), Hughes, C., Hughes, D., Kane, D. B., & Skinner, T. (1983). Rain forest. The Society.
Chicago-viite (17. p.)National Geographic Society, Pa.) WQED (Television station : Pittsburg, Carol Hughes, David Hughes, Dennis B. Kane, ja Thomas Skinner. Rain Forest. Washington, D.C: The Society, 1983.
MLA-viite (9. p.)National Geographic Society, et al. Rain Forest. The Society, 1983.
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