APA (7th ed.) Citation

Yoon, S. (2012). Penguin and Pinecone: A friend story. Walker & Co..

Chicago Style (17th ed.) Citation

Yoon, Salina. Penguin and Pinecone: A Friend Story. New York: Walker & Co., 2012.

MLA (8th ed.) Citation

Yoon, Salina. Penguin and Pinecone: A Friend Story. Walker & Co., 2012.

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