APA (7th ed.) Citation

(2009). Grandpa baby (1. publ. by Penguin Group (Australia).). Penguin / Viking.

Chicago Style (17th ed.) Citation

Grandpa Baby. 1. publ. by Penguin Group (Australia). Camberwell, Vic: Penguin / Viking, 2009.

MLA (9th ed.) Citation

Grandpa Baby. 1. publ. by Penguin Group (Australia). Penguin / Viking, 2009.

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