U.S. IND./FED. SHEET METAL, INC. v. DIRECTOR, OWCP. The Oyez Project at IIT Chicago-Kent College of Law. 12 February 2012. <http://www.oyez.org/cases/1980-1989/1981/1981_80_518>.
U.S. IND./FED. SHEET METAL, INC. v. DIRECTOR, OWCP, The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1980-1989/1981/1981_80_518 (last visited February 12, 2012).
"U.S. IND./FED. SHEET METAL, INC. v. DIRECTOR, OWCP," The Oyez Project at IIT Chicago-Kent College of Law, accessed February 12, 2012, http://www.oyez.org/cases/1980-1989/1981/1981_80_518.