APA (7th ed.) Citation

De Groat, D. (1999). Happy birthday to you, you belong in a zoo. Morrow Junior Books.

Chicago Style (17th ed.) Citation

De Groat, Diane. Happy Birthday to You, You Belong in a Zoo. New York, NY: Morrow Junior Books, 1999.

MLA (9th ed.) Citation

De Groat, Diane. Happy Birthday to You, You Belong in a Zoo. Morrow Junior Books, 1999.

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