World almanac, 1981 (Alfred Hitchcock; d. Apr. 29, 1980)
Hsi-chʻü-kʻao-kʻo yen chiu, 1983.
Aktsoglou, B. Alphrent Chitskok, 1985.
Internet Movie Database, Jan. 31, 2006 (Alfred Hitchcock; b. Alfred Joseph Hitchcock, Aug. 13, 1899, Leytonstone, London, England, d. Apr. 29, 1980, Los Angeles, Calif.; sometimes credited as Sir Alfred Hitchcock; producer, director, actor, writer, editor)