PENNSYLVANIA R. CO. v. RYCHLIK. The Oyez Project at IIT Chicago-Kent College of Law. 12 February 2012. <http://www.oyez.org/cases/1950-1959/1956/1956_56>.
PENNSYLVANIA R. CO. v. RYCHLIK, The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1950-1959/1956/1956_56 (last visited February 12, 2012).
"PENNSYLVANIA R. CO. v. RYCHLIK," The Oyez Project at IIT Chicago-Kent College of Law, accessed February 12, 2012, http://www.oyez.org/cases/1950-1959/1956/1956_56.