Robertson, I., & Sterlin, J. (2013). Island of bones: Crowther and westerman series, book 3 (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRobertson, Imogen, और Jenny Sterlin. Island of Bones: Crowther and Westerman Series, Book 3. Unabridged. Prince Frederick: Recorded Books Inc., 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRobertson, Imogen, और Jenny Sterlin. Island of Bones: Crowther and Westerman Series, Book 3. Unabridged. Recorded Books Inc., 2013.
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