Critchlow,Donald T, Critchlow, D. T., & VanderMeer, P. R. (2012). Oxford encyclopedia of American political and legal history. Oxford University Press.
Dyfyniad Arddull ChicagoCritchlow,Donald T, Donald T. Critchlow, and Philip R. VanderMeer. Oxford Encyclopedia of American Political and Legal History. New York: Oxford University Press, 2012.
Dyfyniad MLACritchlow,Donald T, et al. Oxford Encyclopedia of American Political and Legal History. Oxford University Press, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.