APA (7th ed.) Citation

United States. Bureau of Labor Statistics & David, L. M. (1950). Economic status of library personnel: 1949. American Library Association.

Chicago Style (17th ed.) Citation

United States. Bureau of Labor Statistics and Lily Mary David. Economic Status of Library Personnel: 1949. Chicago: American Library Association, 1950.

MLA (9th ed.) Citation

United States. Bureau of Labor Statistics and Lily Mary David. Economic Status of Library Personnel: 1949. American Library Association, 1950.