APA (7th ed.) Citation

United States. Social Security Board. (1940). Social security yearbook, for the calendar year 1939. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Social Security Board. Social Security Yearbook, for the Calendar Year 1939. [Washington]: [publisher not identified], 1940.

MLA (9th ed.) Citation

United States. Social Security Board. Social Security Yearbook, for the Calendar Year 1939. [publisher not identified], 1940.

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