Markle, S. (2020). Follow those zebras: Solving a migration mystery. Millbrook Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMarkle, Sandra. Follow Those Zebras: Solving a Migration Mystery. Minneapolis: Millbrook Press, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMarkle, Sandra. Follow Those Zebras: Solving a Migration Mystery. Millbrook Press, 2020.
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