APA (7th ed.) Citation

Kline, S., & Wummer, A. (2008). Horrible Harry and the dead letters. Viking.

Chicago Style (17th ed.) Citation

Kline, Suzy, and Amy Wummer. Horrible Harry and the Dead Letters. New York: Viking, 2008.

MLA (8th ed.) Citation

Kline, Suzy, and Amy Wummer. Horrible Harry and the Dead Letters. Viking, 2008.

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