PERMA MUFFLERS v. INT'L PARTS CORP.. The Oyez Project at IIT Chicago-Kent College of Law. 12 February 2012. <http://www.oyez.org/cases/1960-1969/1967/1967_733>.
PERMA MUFFLERS v. INT'L PARTS CORP., The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1960-1969/1967/1967_733 (last visited February 12, 2012).
"PERMA MUFFLERS v. INT'L PARTS CORP.," The Oyez Project at IIT Chicago-Kent College of Law, accessed February 12, 2012, http://www.oyez.org/cases/1960-1969/1967/1967_733.