APA (7th ed.) Citation

United States. Women's Bureau. (1990). Earnings differences between women and men. U.S. Dept. of Labor, Women's Bureau.

Chicago Style (17th ed.) Citation

United States. Women's Bureau. Earnings Differences Between Women and Men. [Washington, D.C.?]: U.S. Dept. of Labor, Women's Bureau, 1990.

MLA (9th ed.) Citation

United States. Women's Bureau. Earnings Differences Between Women and Men. U.S. Dept. of Labor, Women's Bureau, 1990.