Butcher, J., & Marsters, J. (2014). Grave Peril (Unabridged.). Brilliance Audio ; Distributed by Recorded Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रButcher, Jim, और James Marsters. Grave Peril. Unabridged. Grand Haven, Mich. : Prince Frederick, MD: Brilliance Audio ; Distributed by Recorded Books, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रButcher, Jim, और James Marsters. Grave Peril. Unabridged. Brilliance Audio ; Distributed by Recorded Books, 2014.
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