NORTHERN PAC. R. CO. v. UNITED STATES. The Oyez Project at IIT Chicago-Kent College of Law. 29 April 2013. <http://www.oyez.org/cases/1950-1959/1957/1957_59>.
NORTHERN PAC. R. CO. v. UNITED STATES, The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1950-1959/1957/1957_59 (last visited April 29, 2013).
"NORTHERN PAC. R. CO. v. UNITED STATES," The Oyez Project at IIT Chicago-Kent College of Law, accessed April 29, 2013, http://www.oyez.org/cases/1950-1959/1957/1957_59.