APA Style

Keene, C. (2015). The Clue in the Diary (Nancy Drew #7) . New York, USA: Grosset & Dunlap (Penguin Young Readers Group).

MLA Style

Keene, Carolyn. "The Clue in the Diary (Nancy Drew #7)". New York, USA: Grosset & Dunlap (Penguin Young Readers Group), 2015. Printed Book.