APA (7th ed.) Citation

Clark, R. E., & Clark, J. F. (1989). The encyclopedia of child abuse. Facts on File.

Chicago Style (17th ed.) Citation

Clark, Robin E., and Judith F. Clark. The Encyclopedia of Child Abuse. New York [u.a.]: Facts on File, 1989.

MLA (8th ed.) Citation

Clark, Robin E., and Judith F. Clark. The Encyclopedia of Child Abuse. Facts on File, 1989.

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