APA (7th ed.) Citation

Dessen, S. (2004). Keeping the moon. Penguin Books.

Chicago Style (17th ed.) Citation

Dessen, Sarah. Keeping the Moon. London: Penguin Books, 2004.

MLA (9th ed.) Citation

Dessen, Sarah. Keeping the Moon. Penguin Books, 2004.

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