Springer, N., & Kellgren, K. (2006). The case of the missing marquess (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSpringer, Nancy, और Katherine Kellgren. The Case of the Missing Marquess. Unabridged. Prince Frederick: Recorded Books Inc., 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSpringer, Nancy, और Katherine Kellgren. The Case of the Missing Marquess. Unabridged. Recorded Books Inc., 2006.
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