LABOR BOARD v. LION OIL CO.. The Oyez Project at IIT Chicago-Kent College of Law. 12 February 2012. <http://www.oyez.org/cases/1950-1959/1956/1956_4>.
LABOR BOARD v. LION OIL CO., The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1950-1959/1956/1956_4 (last visited February 12, 2012).
"LABOR BOARD v. LION OIL CO.," The Oyez Project at IIT Chicago-Kent College of Law, accessed February 12, 2012, http://www.oyez.org/cases/1950-1959/1956/1956_4.