Viola, J. (2021). The digestive system: A tour through your guts (First edition.). First Second.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रViola, Jason. The Digestive System: A Tour Through Your Guts. First edition. New York: First Second, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रViola, Jason. The Digestive System: A Tour Through Your Guts. First edition. First Second, 2021.
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