Schaefer, L. M., & Hartung, S. K. (2008). What's that, Mittens? HarperCollins.
Chicago Style (17th ed.) CitationSchaefer, Lola M., and Susan Kathleen Hartung. What's That, Mittens? New York: HarperCollins, 2008.
MLA (8th ed.) CitationSchaefer, Lola M., and Susan Kathleen Hartung. What's That, Mittens? HarperCollins, 2008.
Warning: These citations may not always be 100% accurate.