APA (7th ed.) Citation

McCaffrey, A., & Scarborough, E. A. (2005). First warning: Acorna's children. EOS.

Chicago Style (17th ed.) Citation

McCaffrey, Anne, and Elizabeth Ann Scarborough. First Warning: Acorna's Children. New York: EOS, 2005.

MLA (9th ed.) Citation

McCaffrey, Anne, and Elizabeth Ann Scarborough. First Warning: Acorna's Children. EOS, 2005.