Keene, C., & Wu, N. (2014). The sand castle mystery (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKeene, Carolyn, और Nancy Wu. The Sand Castle Mystery. Unabridged. Prince Frederick: Recorded Books Inc., 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKeene, Carolyn, और Nancy Wu. The Sand Castle Mystery. Unabridged. Recorded Books Inc., 2014.
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