Duvall, Robert (Autor Personal)

Slawson, J. Robert Duvall, 1985: CIP t.p. (Robert Duvall) pub. info. (actor)

IMDb, Jan. 25, 2007 (Robert Duvall; b. Jan. 5, 1931, San Diego, Calif.; sometimes credited as Robert Duval; birth name: Robert Selden Duvall)

IMDb, December 12, 2017: (Robert Duvall, actor, producer ; b. January 5, 1931 in San Diego, California, USA ; Robert Selden Duvall)