APA (7th ed.) Citation

Clark, W. R. (1995). At war within: The double-edged sword of immunity. Oxford University Press.

Chicago Style (17th ed.) Citation

Clark, William R. At War Within: The Double-edged Sword of Immunity. New York: Oxford University Press, 1995.

MLA (9th ed.) Citation

Clark, William R. At War Within: The Double-edged Sword of Immunity. Oxford University Press, 1995.