HERDMAN v. PENNSYLVANIA R. CO.. The Oyez Project at IIT Chicago-Kent College of Law. 27 April 2013. <http://www.oyez.org/cases/1950-1959/1956/1956_46>.
HERDMAN v. PENNSYLVANIA R. CO., The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1950-1959/1956/1956_46 (last visited April 27, 2013).
"HERDMAN v. PENNSYLVANIA R. CO.," The Oyez Project at IIT Chicago-Kent College of Law, accessed April 27, 2013, http://www.oyez.org/cases/1950-1959/1956/1956_46.