APA Style

O'Keefe, S, H., Munsinger, L. (1989). One hungry monster : a counting book in rhyme . New York, USA: Scholastic Inc.

MLA Style

O'Keefe, Susan, Heyboer., Munsinger, Lynn. "One hungry monster : a counting book in rhyme". New York, USA: Scholastic Inc, 1989. Text.