Kettl, D. F. (1983). The regulation of American federalism. Louisiana State University Press.
Dyfyniad Arddull ChicagoKettl, Donald F. The Regulation of American Federalism. Baton Rouge: Louisiana State University Press, 1983.
Dyfyniad MLAKettl, Donald F. The Regulation of American Federalism. Louisiana State University Press, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.