APA Style

Stilton, G., Wolf, M. (2004). Geronimo Stilton it's Halloween, you 'fraidy mouse! . New York, USA: Scholastic Inc.

MLA Style

Stilton, Geronimo., Wolf, Matt. "Geronimo Stilton it's Halloween, you 'fraidy mouse!". New York, USA: Scholastic Inc, 2004. Text.