VAUGHN v. VERMILION CORP.. The Oyez Project at IIT Chicago-Kent College of Law. 29 April 2013. <http://www.oyez.org/cases/1970-1979/1979/1979_77_1819>.
VAUGHN v. VERMILION CORP., The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1970-1979/1979/1979_77_1819 (last visited April 29, 2013).
"VAUGHN v. VERMILION CORP.," The Oyez Project at IIT Chicago-Kent College of Law, accessed April 29, 2013, http://www.oyez.org/cases/1970-1979/1979/1979_77_1819.