London, J., & Olson, J. (2011). Little penguin: The Emperor of Antarctica. Marshall Cavendish Children's.
芝加哥风格引文London, Jonathan, 与 Julie Olson. Little Penguin: The Emperor of Antarctica. New York: Marshall Cavendish Children's, 2011.
MLA引文London, Jonathan, 与 Julie Olson. Little Penguin: The Emperor of Antarctica. Marshall Cavendish Children's, 2011.
警告：这些引文格式不一定是100％准确.