Gardy, J., & Wuthrich, B. (2021). It takes guts: How your body turns food into fuel (and poop). Greystone Kids.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGardy, Jennifer, और Belle Wuthrich. It Takes Guts: How Your Body Turns Food into Fuel (and Poop). Vancouver: Greystone Kids, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGardy, Jennifer, और Belle Wuthrich. It Takes Guts: How Your Body Turns Food into Fuel (and Poop). Greystone Kids, 2021.
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