APA Style

Stilton, G., Pastrovicchio, A. (2009). Geronimo Stilton a fabumouse school adventure . New York, USA: Scholastic Inc.

MLA Style

Stilton, Geronimo., Pastrovicchio, Alessandro. "Geronimo Stilton a fabumouse school adventure". New York, USA: Scholastic Inc, 2009. Text.