APA (7th ed.) Citation

Ahlberg, J., & Ahlberg, A. (1991). The jolly Christmas postman. Little, Brown and Company.

Chicago Style (17th ed.) Citation

Ahlberg, Janet, and Allan Ahlberg. The Jolly Christmas Postman. Boston: Little, Brown and Company, 1991.

MLA (9th ed.) Citation

Ahlberg, Janet, and Allan Ahlberg. The Jolly Christmas Postman. Little, Brown and Company, 1991.