Davidson, M., & Wu, N. (2008). Undead and unworthy: Undead - betsy series, book 7 (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDavidson, MaryJanice, और Nancy Wu. Undead and Unworthy: Undead - Betsy Series, Book 7. Unabridged. Prince Frederick: Recorded Books Inc., 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDavidson, MaryJanice, और Nancy Wu. Undead and Unworthy: Undead - Betsy Series, Book 7. Unabridged. Recorded Books Inc., 2008.
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