Medina, N., & Groff, D. (2017). What was the Ice Age? Penguin Workshop, an imprint of Penguin Random House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMedina, Nico, और David Groff. What Was the Ice Age? New York, New York: Penguin Workshop, an imprint of Penguin Random House, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMedina, Nico, और David Groff. What Was the Ice Age? Penguin Workshop, an imprint of Penguin Random House, 2017.
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