UNITED STATES v. UNITED STATES GYPSUM CO.. The Oyez Project at IIT Chicago-Kent College of Law. 26 April 2013. <http://www.oyez.org/cases/1970-1979/1977/1977_76_1560>.
UNITED STATES v. UNITED STATES GYPSUM CO., The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1970-1979/1977/1977_76_1560 (last visited April 26, 2013).
"UNITED STATES v. UNITED STATES GYPSUM CO.," The Oyez Project at IIT Chicago-Kent College of Law, accessed April 26, 2013, http://www.oyez.org/cases/1970-1979/1977/1977_76_1560.