APA (7th ed.) Citation

United States. Federal Board for Vocational Education. (1920). Postage charges on correspondence lessons. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Federal Board for Vocational Education. Postage Charges on Correspondence Lessons. [Washington]: [publisher not identified], 1920.

MLA (9th ed.) Citation

United States. Federal Board for Vocational Education. Postage Charges on Correspondence Lessons. [publisher not identified], 1920.

Warning: These citations may not always be 100% accurate.