Davidson, M., & Wu, N. (2010). Undead and unfinished: Undead - betsy series, book 9 (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDavidson, MaryJanice, और Nancy Wu. Undead and Unfinished: Undead - Betsy Series, Book 9. Unabridged. Prince Frederick: Recorded Books Inc., 2010.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDavidson, MaryJanice, और Nancy Wu. Undead and Unfinished: Undead - Betsy Series, Book 9. Unabridged. Recorded Books Inc., 2010.
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