United States. Department of the Interior. Division of Motion Pictures. (1937). Documentary motion pictures. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Department of the Interior. Division of Motion Pictures. Documentary Motion Pictures. [Washington]: [s.n.], 1937.
MLA (9th ed.) CitationUnited States. Department of the Interior. Division of Motion Pictures. Documentary Motion Pictures. [s.n.], 1937.
Warning: These citations may not always be 100% accurate.