APA (7th ed.) Citation

Voelkel, J., & Voelkel, P. (2011). Middleworld (Rev. ed.). Egmont USA : Scholastic, Inc..

Chicago Style (17th ed.) Citation

Voelkel, Jon, and Pamela Voelkel. Middleworld. Rev. ed. New York: Egmont USA : Scholastic, Inc., 2011.

MLA (8th ed.) Citation

Voelkel, Jon, and Pamela Voelkel. Middleworld. Rev. ed. Egmont USA : Scholastic, Inc., 2011.

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