APA (7th ed.) Citation

Wargin, K., & O'Malley, K. (2006). Prairie numbers: An Illinois number book. Sleeping Bear Press.

Chicago Style (17th ed.) Citation

Wargin, Kathy-jo, and Kathy O'Malley. Prairie Numbers: An Illinois Number Book. Chelsea: Sleeping Bear Press, 2006.

MLA (9th ed.) Citation

Wargin, Kathy-jo, and Kathy O'Malley. Prairie Numbers: An Illinois Number Book. Sleeping Bear Press, 2006.