APA (7th ed.) Citation

Butterworth, A., & Butterworth, N. (2008). Jake the good bad dog. Happy Cat Books.

Chicago Style (17th ed.) Citation

Butterworth, Annette, and Nick Butterworth. Jake the Good Bad Dog. London: Happy Cat Books, 2008.

MLA (9th ed.) Citation

Butterworth, Annette, and Nick Butterworth. Jake the Good Bad Dog. Happy Cat Books, 2008.

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