APA Style

Stilton, G., Keys, L. (2004). Geronimo Stilton a fabumouse vacation for Geronimo . New York, USA: Scholastic Inc.

MLA Style

Stilton, Geronimo., Keys, Larry. "Geronimo Stilton a fabumouse vacation for Geronimo". New York, USA: Scholastic Inc, 2004. Text.