LABOR BOARD v. MINE WORKERS. The Oyez Project at IIT Chicago-Kent College of Law. 17 May 2012. <http://www.oyez.org/cases/1950-1959/1957/1957_64>.
LABOR BOARD v. MINE WORKERS, The Oyez Project at IIT Chicago-Kent College of Law, http://www.oyez.org/cases/1950-1959/1957/1957_64 (last visited May 17, 2012).
"LABOR BOARD v. MINE WORKERS," The Oyez Project at IIT Chicago-Kent College of Law, accessed May 17, 2012, http://www.oyez.org/cases/1950-1959/1957/1957_64.