APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

U. S. Bureau of Labor Statistics and Lily Mary David. Economic Status of Library Personnel, 1949. American Library Association, 1950.