APA Style

Piemme, E. (2007). Geronimo Stilton : Geronimo And The Gold Medal Mystery , Vol 33 (33 ed.). : Scholastic Inc..

MLA Style

Piemme, Edizioni. "Geronimo Stilton : Geronimo And The Gold Medal Mystery , Vol 33". 33 ed. : Scholastic Inc., 2007. Text.