APA (7th ed.) Citation

Medina, N., & Groff, D. (2017). What was the Ice Age? Penguin Workshop, an imprint of Penguin Random House.

Chicago Style (17th ed.) Citation

Medina, Nico, and David Groff. What Was the Ice Age? New York, New York: Penguin Workshop, an imprint of Penguin Random House, 2017.

MLA (8th ed.) Citation

Medina, Nico, and David Groff. What Was the Ice Age? Penguin Workshop, an imprint of Penguin Random House, 2017.

Warning: These citations may not always be 100% accurate.