COLGROVE v. BATTIN. The Oyez Project at IIT Chicago-Kent College of Law. 27 April 2013. <http://www.oyez.org/cases/1970-1979/1972/1972_71_1442>.
COLGROVE v. BATTIN, The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1970-1979/1972/1972_71_1442 (last visited April 27, 2013).
"COLGROVE v. BATTIN," The Oyez Project at IIT Chicago-Kent College of Law, accessed April 27, 2013, http://www.oyez.org/cases/1970-1979/1972/1972_71_1442.