F. T. C. v. NATIONAL LEAD CO.. The Oyez Project at IIT Chicago-Kent College of Law. 26 April 2013. <http://www.oyez.org/cases/1950-1959/1956/1956_63>.
F. T. C. v. NATIONAL LEAD CO., The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1950-1959/1956/1956_63 (last visited April 26, 2013).
"F. T. C. v. NATIONAL LEAD CO.," The Oyez Project at IIT Chicago-Kent College of Law, accessed April 26, 2013, http://www.oyez.org/cases/1950-1959/1956/1956_63.