APA (7th ed.) Citation

(1992). Hey hippopotamus, do babies eat cake too? (1. publ.). Hodder & Stoughton.

Chicago Style (17th ed.) Citation

Hey Hippopotamus, Do Babies Eat Cake Too? 1. publ. Sydney [u.a.]: Hodder & Stoughton, 1992.

MLA (9th ed.) Citation

Hey Hippopotamus, Do Babies Eat Cake Too? 1. publ. Hodder & Stoughton, 1992.

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