APA (7th ed.) Citation

Morrison, W. H. (1993). Twentieth century American wars. Hippocrene Books.

Chicago Style (17th ed.) Citation

Morrison, Wilbur H. Twentieth Century American Wars. New York: Hippocrene Books, 1993.

MLA (9th ed.) Citation

Morrison, Wilbur H. Twentieth Century American Wars. Hippocrene Books, 1993.