CHICAGO, M., ST. P. & P. R. CO. v. ILLINOIS. The Oyez Project at IIT Chicago-Kent College of Law. 17 May 2012. <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 May 17, 2012).
"CHICAGO, M., ST. P. & P. R. CO. v. ILLINOIS," The Oyez Project at IIT Chicago-Kent College of Law, accessed May 17, 2012, http://www.oyez.org/cases/1950-1959/1957/1957_12.