APA (7th ed.) Citation
Richards, D. A. J. (1989). Foundations of American constitutionalism. Oxford University Press.
Chicago Style (17th ed.) Citation
Richards, David A. J. Foundations of American Constitutionalism. New York: Oxford University Press, 1989.
MLA (9th ed.) Citation
Richards, David A. J. Foundations of American Constitutionalism. Oxford University Press, 1989.
Warning: These citations may not always be 100% accurate.