Cita APA (7th ed.)
U.S. Dept. of Labor, Bureau of Labor Standards, & Ward, M. F. (1958). Safety Standards. U.S.Government Print. Off.
Cita Chicago (17th ed.)
U.S. Dept. of Labor, Bureau of Labor Standards, i Mary Frances Ward. Safety Standards. Washington: U.S.Government Print. Off, 1958.
Cita MLA (9th ed.)
U.S. Dept. of Labor, Bureau of Labor Standards, i Mary Frances Ward. Safety Standards. U.S.Government Print. Off, 1958.
Atenció: Aquestes cites poden no estar 100% correctes.