APA (7th ed.) Citation

Downham, J. (2007). Before I die (1st American ed.). David Fickling Books.

Chicago Style (17th ed.) Citation

Downham, Jenny. Before I Die. 1st American ed. New York: David Fickling Books, 2007.

MLA (8th ed.) Citation

Downham, Jenny. Before I Die. 1st American ed. David Fickling Books, 2007.