APA Style

Stevenson, S, S. et al (2013). Agatha, Girl of Mystery : the Heist at Niagara Falls . New York: Grosset & Dunlap.

MLA Style

Stevenson, Sir, Steve. et al. "Agatha, Girl of Mystery : the Heist at Niagara Falls". New York: Grosset & Dunlap, 2013. Printed Book.