O'BRIEN v. BROWN. The Oyez Project at IIT Chicago-Kent College of Law. 26 April 2013. <http://www.oyez.org/cases/1970-1979/1972/1972_72_34>.
O'BRIEN v. BROWN, The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1970-1979/1972/1972_72_34 (last visited April 26, 2013).
"O'BRIEN v. BROWN," The Oyez Project at IIT Chicago-Kent College of Law, accessed April 26, 2013, http://www.oyez.org/cases/1970-1979/1972/1972_72_34.