APA (7th ed.) Citation

United States. Office of Education. (1939). Educational directory, part 4: Educational associations and directories. [s.n.].

Chicago Style (17th ed.) Citation

United States. Office of Education. Educational Directory, Part 4: Educational Associations and Directories. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. Office of Education. Educational Directory, Part 4: Educational Associations and Directories. [s.n.], 1939.