WESTERN UNION CO. v. PENNSYLVANIA. The Oyez Project at IIT Chicago-Kent College of Law. 17 May 2012. <http://www.oyez.org/cases/1960-1969/1961/1961_15>.
WESTERN UNION CO. v. PENNSYLVANIA, The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1960-1969/1961/1961_15 (last visited May 17, 2012).
"WESTERN UNION CO. v. PENNSYLVANIA," The Oyez Project at IIT Chicago-Kent College of Law, accessed May 17, 2012, http://www.oyez.org/cases/1960-1969/1961/1961_15.