SOUTH DAKOTA v. OPPERMAN. The Oyez Project at IIT Chicago-Kent College of Law. 13 February 2012. <http://www.oyez.org/cases/1970-1979/1975/1975_75_76>.
SOUTH DAKOTA v. OPPERMAN, The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1970-1979/1975/1975_75_76 (last visited February 13, 2012).
"SOUTH DAKOTA v. OPPERMAN," The Oyez Project at IIT Chicago-Kent College of Law, accessed February 13, 2012, http://www.oyez.org/cases/1970-1979/1975/1975_75_76.