John M. Harlan. The Oyez Project at IIT Chicago-Kent College of Law. 21 May 2013. <http://www.oyez.org/justices/john_m_harlan&sub=opinions/1904>.
John M. Harlan, The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/justices/john_m_harlan&sub=opinions/1904 (last visited May 21, 2013).
"John M. Harlan," The Oyez Project at IIT Chicago-Kent College of Law, accessed May 21, 2013, http://www.oyez.org/justices/john_m_harlan&sub=opinions/1904.