Clifford, C. M. (1991). Counsel to the president: A memoir. New York: Random House.
Dyfyniad Arddull ChicagoClifford, Clark M. Counsel to the President: A Memoir. New York: Random House, 1991.
Dyfyniad MLAClifford, Clark M. Counsel to the President: A Memoir. New York: Random House, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.