Internet movie database, 11-12-2002 (Howard Hawks; b. 1896, Goshen, Indiana, d. 1977, Palm Springs, California; b. name Howard Winchester Hawks; director, writer, producer, actor)

Rivales, D.L. 1995 carátula (dirección, Howard Hawks)

Halliwell's film guide, de Leslie Halliwell, 1994

Film Index International, 1997 (Howard Hawks ; b. 1896, d. 1977 ; direction, production, scripting)