Higgins, G. (1959). Labor-management cooperation. Diocesan Labor Institute.
Dyfyniad Arddull ChicagoHiggins, George. Labor-management Cooperation. New Haven, Conn.: Diocesan Labor Institute, 1959.
Dyfyniad MLAHiggins, George. Labor-management Cooperation. Diocesan Labor Institute, 1959.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.