National Geographic Society (U.S.), Hurley, G., Ballard, R. D., & Sheen, M. (1997). Secrets of the Titanic. National Geographic Video ; Distributed by Warner Home Video.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Geographic Society (U.S.), Graham Hurley, Robert D. Ballard, और Martin Sheen. Secrets of the Titanic. Washington, D.C. : [Burbank, CA]: National Geographic Video ; Distributed by Warner Home Video, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNational Geographic Society (U.S.), et al. Secrets of the Titanic. National Geographic Video ; Distributed by Warner Home Video, 1997.
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