المؤلفون: Schulte, Paul A., Ringen, Knut, Hemstreet, George P., Altekruse, Ernest B., Gullen, Warren H., Patton, Maurice G., Allsbrook, William C., Crosby, John H., West, Seymour S., Witherington, Roy, Koss, Leopold, Bales, Carol E., Tillet, Sandra, Rooks, Shirley C.F., Stern, Frank, Stringer, William, Schmidt, Verleen A., Brubaker, Margaret M.

المصدر: Journal of Occupational Medicine, 1985 Feb 01. 27(2), 115-121.

URL الوصول: https://www.jstor.org/stable/45006051