Cita APA (7a ed.)
BBC Worldwide, Ltd, British Broadcasting Corporation. Natural History Unit, Greenlight Media AG, Walt Disney Productions, Fothergill, A., Linfield, M., . . . Tidmarsh, A. (2009). Earth. Walt Disney Studios Motion Picture.
Cita Chicago Style (17a ed.)
BBC Worldwide, Ltd, et al. Earth. Santa Monica, Calif.: Walt Disney Studios Motion Picture, 2009.
Cita MLA (9a ed.)
BBC Worldwide, Ltd, et al. Earth. Walt Disney Studios Motion Picture, 2009.
Precaución: Estas citas no son 100% exactas.