Hatkoff, J., Hatkoff, I., & Hatkoff, C. (2009). Winter's tail: How one little dolphin learned to swim again. Scholastic Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHatkoff, Juliana, Isabella Hatkoff, और Craig Hatkoff. Winter's Tail: How One Little Dolphin Learned to Swim Again. New York: Scholastic Press, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHatkoff, Juliana, et al. Winter's Tail: How One Little Dolphin Learned to Swim Again. Scholastic Press, 2009.
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