Cita APA

Discovery Channel (Firma), Discovery Communications, I., Fulcrum Productions West., Skilton, B., Stewart, P., & Theunissen, A. (1998). La asombrosa tierra: Amazing earth. United States: Discovery Communications.

Citación estilo Chicago

Discovery Channel (Firma), Inc Discovery Communications, Fulcrum Productions West, Brian Skilton, Patrick Stewart, y Amanda Theunissen. La Asombrosa Tierra: Amazing Earth. United States: Discovery Communications, 1998.

Cita MLA

Discovery Channel (Firma), et al. La Asombrosa Tierra: Amazing Earth. United States: Discovery Communications, 1998.