APA (7th ed.) Citation

Rogerson, G., & Peterson, I. (2005). Happy birthday Santa! Gullans Children's Books.

Chicago Style (17th ed.) Citation

Rogerson, Gillian, and Ingela Peterson. Happy Birthday Santa! s.l.: Gullans Children's Books, 2005.

MLA (9th ed.) Citation

Rogerson, Gillian, and Ingela Peterson. Happy Birthday Santa! Gullans Children's Books, 2005.