Spengler, Pierre, 1947- (Autor Personal)

Superman, 1986: credits (Pierre Spengler)

International motion picture almanac, 1999 (Spengler, Pierre; producer, b. Paris, France, 1947)

IMDb, July 11, 2022: (Pierre Spengler; producer, actor, production manager; Born: June 5, 1947 in Paris, France)