APA (7th ed.) Citation

Schaefer, C. L., & Morgan, P. (2011). Who's there? Viking.

Chicago Style (17th ed.) Citation

Schaefer, Carole Lexa, and Pierr Morgan. Who's There? New York: Viking, 2011.

MLA (8th ed.) Citation

Schaefer, Carole Lexa, and Pierr Morgan. Who's There? Viking, 2011.

Warning: These citations may not always be 100% accurate.