Mentorn (Firm), WGBH (Television station : Boston, Mass.), National Geographic Channels International, & Fox, B. (2007). Mystery of the megavolcano. WGBH Boston Video.
Cita Chicago Style (17a ed.)Mentorn (Firm), Mass.) WGBH (Television station : Boston, National Geographic Channels International, y Ben Fox. Mystery of the Megavolcano. [Boston]: WGBH Boston Video, 2007.
Cita MLA (8a ed.)Mentorn (Firm), et al. Mystery of the Megavolcano. WGBH Boston Video, 2007.
Precaución: Estas citas no son 100% exactas.