APA Style

Stilton, G., Nithael, M. (2004). Geronimo Stilton paws off, cheddarface! . New York, USA: Scholastic Inc.

MLA Style

Stilton, Geronimo., Nithael, Mark. "Geronimo Stilton paws off, cheddarface!". New York, USA: Scholastic Inc, 2004. Text.