APA (7th ed.) Citation

Facts on File, Inc, & Werlock, A. H. P. (2006). The Facts on File companion to the American novel. Facts on File.

Chicago Style (17th ed.) Citation

Facts on File, Inc, and Abby H. P. Werlock. The Facts on File Companion to the American Novel. New York: Facts on File, 2006.

MLA (8th ed.) Citation

Facts on File, Inc, and Abby H. P. Werlock. The Facts on File Companion to the American Novel. Facts on File, 2006.