APA (7th ed.) Citation

U.S. Congress. (1961). Biographical directory of the American Congress, 1774-1949. U.S. Gov't Printing Office.

Chicago Style (17th ed.) Citation

U.S. Congress. Biographical Directory of the American Congress, 1774-1949. Washington, D.C: U.S. Gov't Printing Office, 1961.

MLA (9th ed.) Citation

U.S. Congress. Biographical Directory of the American Congress, 1774-1949. U.S. Gov't Printing Office, 1961.