APA (7th ed.) Citation

United States. Congress. Joint Commission on Postal Salaries & ProQuest (Firm). (1919). Supervisory Officers, etc. -- Railway Mail Service: Hearings before the United States Joint Commission on Postal Salaries, Sixty-Sixth Congress, first session, on Oct. 20, 1919. U.S. G.P.O..

Chicago Style (17th ed.) Citation

United States. Congress. Joint Commission on Postal Salaries and ProQuest (Firm). Supervisory Officers, Etc. -- Railway Mail Service: Hearings Before the United States Joint Commission on Postal Salaries, Sixty-Sixth Congress, First Session, on Oct. 20, 1919. Washington: U.S. G.P.O., 1919.

MLA (9th ed.) Citation

United States. Congress. Joint Commission on Postal Salaries and ProQuest (Firm). Supervisory Officers, Etc. -- Railway Mail Service: Hearings Before the United States Joint Commission on Postal Salaries, Sixty-Sixth Congress, First Session, on Oct. 20, 1919. U.S. G.P.O., 1919.