. . Benjamin Hampton, A History of the American Film Industrie from its Beginnings to 1931, Erstausgabe 1931, New York (Dover) 1970, S.201; Kevin Brownlow, The War, the West, and the Wilderness, New York (Knopf) 1979, S.158; The American Film Institute Catalog of Motion Pictures Produced in the United States: Feature Films, 1911- 1920, Berkeley (University of California Press) 1988, »Credit and Subject Indices«; The Americen Film Institute Catalog of Motion Pictures Produced in the United States: Feature Films 1921- 1930, New York (Bowker) 1971, »Credit and Subject Indices«; George Michell, »All Quiet on the Western Front« in George Turner (Hrsg.), The Cinema of Adventure, Romance, and Terror, Hollywood (ASC Press) 1984, S.61; Bosley Crowther, Great Films: 50 Golden Years of Motion Pictures, New York (Putnam) 1967, S.79.