WGBH (Television station : Boston, Mass.). Science Unit, British Broadcasting Corporation. Television Service, WGBH Video (Firm), & Barnes, M. (2006). Secrets of lost empires. WGBH Boston Video.
Cita Chicago Style (17a ed.)WGBH (Television station : Boston, Mass.). Science Unit, British Broadcasting Corporation. Television Service, WGBH Video (Firm), y Michael Barnes. Secrets of Lost Empires. [Boston, MA]: WGBH Boston Video, 2006.
Cita MLA (8a ed.)WGBH (Television station : Boston, Mass.). Science Unit, et al. Secrets of Lost Empires. WGBH Boston Video, 2006.
Precaución: Estas citas no son 100% exactas.