Kerbel, D., & Poon, A. (2021). Fred & Marjorie: A doctor, a dog, and the discovery of insulin. Owlkids Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKerbel, Deborah, और Angela Poon. Fred & Marjorie: A Doctor, a Dog, and the Discovery of Insulin. Toronto, ON: Owlkids Books, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKerbel, Deborah, और Angela Poon. Fred & Marjorie: A Doctor, a Dog, and the Discovery of Insulin. Owlkids Books, 2021.
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