APA (7th ed.) Citation

United States. Department of the Interior. (1929). Directory of chief educational offices of various countries of world. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Directory of Chief Educational Offices of Various Countries of World. [Washington]: [publisher not identified], 1929.

MLA (9th ed.) Citation

United States. Department of the Interior. Directory of Chief Educational Offices of Various Countries of World. [publisher not identified], 1929.