APA (7th ed.) Citation

Kushner, E., Keller, D. G., & Sherman, D. (1997). The horns of Elfland. Penguin Group.

Chicago Style (17th ed.) Citation

Kushner, Ellen, Donald G. Keller, and Delia Sherman. The Horns of Elfland. New York, N.Y.: Penguin Group, 1997.

MLA (9th ed.) Citation

Kushner, Ellen, et al. The Horns of Elfland. Penguin Group, 1997.