Gutman, D., & Goldsmith, J. (2015). Dr. carbles is losing his marbles! (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGutman, Dan, और Jared Goldsmith. Dr. Carbles Is Losing His Marbles! Unabridged. Prince Frederick: Recorded Books Inc., 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGutman, Dan, और Jared Goldsmith. Dr. Carbles Is Losing His Marbles! Unabridged. Recorded Books Inc., 2015.
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