APA (7th ed.) Citation

Diamond Entertainment Corporation, Gaumont British Picture Corp, Hitchcock, A., Donat, R., Carroll, M., & Ashcroft, P. (2001). The 39 steps. Diamond Entertainment.

Chicago Style (17th ed.) Citation

Diamond Entertainment Corporation, Gaumont British Picture Corp, Alfred Hitchcock, Robert Donat, Madeleine Carroll, and Peggy Ashcroft. The 39 Steps. Walnut, Calif.: Diamond Entertainment, 2001.

MLA (9th ed.) Citation

Diamond Entertainment Corporation, et al. The 39 Steps. Diamond Entertainment, 2001.