APA (7th ed.) Citation

Hopkins, L. B., & Alcorn, S. (2008). America at war. Margaret K. McElderry Books.

Chicago Style (17th ed.) Citation

Hopkins, Lee Bennett, and Stephen Alcorn. America at War. New York: Margaret K. McElderry Books, 2008.

MLA (9th ed.) Citation

Hopkins, Lee Bennett, and Stephen Alcorn. America at War. Margaret K. McElderry Books, 2008.