Kenyon, S., & Graham, H. (2011). Retribution: Dark-hunter novels series, book 15 (Unabridged.). Macmillan Audio.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKenyon, Sherrilyn, और Holter Graham. Retribution: Dark-hunter Novels Series, Book 15. Unabridged. New York: Macmillan Audio, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKenyon, Sherrilyn, और Holter Graham. Retribution: Dark-hunter Novels Series, Book 15. Unabridged. Macmillan Audio, 2011.
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