APA (7th ed.) Citation

Abbott, T., & Merrell, D. (2005). The riddle of the Zorfendorf Castle. Scholastic Inc..

Chicago Style (17th ed.) Citation

Abbott, Tony, and David Merrell. The Riddle of the Zorfendorf Castle. New York: Scholastic Inc., 2005.

MLA (9th ed.) Citation

Abbott, Tony, and David Merrell. The Riddle of the Zorfendorf Castle. Scholastic Inc., 2005.

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