CHICAGO, M., ST. P. & P. R. CO. v. ILLINOIS. The Oyez Project at IIT Chicago-Kent College of Law. 26 April 2013. <http://www.oyez.org/cases/1950-1959/1957/1957_12>.
CHICAGO, M., ST. P. & P. R. CO. v. ILLINOIS, The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1950-1959/1957/1957_12 (last visited April 26, 2013).
"CHICAGO, M., ST. P. & P. R. CO. v. ILLINOIS," The Oyez Project at IIT Chicago-Kent College of Law, accessed April 26, 2013, http://www.oyez.org/cases/1950-1959/1957/1957_12.