LEVITT v. COMMITTEE FOR PUBLIC EDUCATION. The Oyez Project at IIT Chicago-Kent College of Law. 27 April 2013. <http://www.oyez.org/cases/1970-1979/1972/1972_72_269>.
LEVITT v. COMMITTEE FOR PUBLIC EDUCATION, The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1970-1979/1972/1972_72_269 (last visited April 27, 2013).
"LEVITT v. COMMITTEE FOR PUBLIC EDUCATION," The Oyez Project at IIT Chicago-Kent College of Law, accessed April 27, 2013, http://www.oyez.org/cases/1970-1979/1972/1972_72_269.