UNITED STATES v. MASON. The Oyez Project at IIT Chicago-Kent College of Law. 13 February 2012. <http://www.oyez.org/cases/1970-1979/1972/1972_72_654>.
UNITED STATES v. MASON, The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1970-1979/1972/1972_72_654 (last visited February 13, 2012).
"UNITED STATES v. MASON," The Oyez Project at IIT Chicago-Kent College of Law, accessed February 13, 2012, http://www.oyez.org/cases/1970-1979/1972/1972_72_654.