Mentorn (Firm), WGBH (Television station : Boston, Mass.), National Geographic Channels International, & Fox, B. (2007). Mystery of the megavolcano. WGBH Boston Video.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMentorn (Firm), Mass.) WGBH (Television station : Boston, National Geographic Channels International, और Ben Fox. Mystery of the Megavolcano. [Boston]: WGBH Boston Video, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMentorn (Firm), et al. Mystery of the Megavolcano. WGBH Boston Video, 2007.
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