APA (7th ed.) Citation

Hannan, P. (2010). The greatest snowman in the world! Harper.

Chicago Style (17th ed.) Citation

Hannan, Peter. The Greatest Snowman in the World! New York: Harper, 2010.

MLA (9th ed.) Citation

Hannan, Peter. The Greatest Snowman in the World! Harper, 2010.

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