LABOR BOARD v. MINE WORKERS. The Oyez Project at IIT Chicago-Kent College of Law. 27 April 2013. <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 April 27, 2013).
"LABOR BOARD v. MINE WORKERS," The Oyez Project at IIT Chicago-Kent College of Law, accessed April 27, 2013, http://www.oyez.org/cases/1950-1959/1957/1957_64.