LOUGHARY, J. W. (1979). Producing Workshops Seminars And Short Cources A Trainer's Handbook By John W. Loughary And Barrie Hopson. Association Press Follett Publ.
Dyfyniad Arddull ChicagoLOUGHARY, John W. Producing Workshops Seminars And Short Cources A Trainer's Handbook By John W. Loughary And Barrie Hopson. Association Press Follett Publ, 1979.
Dyfyniad MLALOUGHARY, John W. Producing Workshops Seminars And Short Cources A Trainer's Handbook By John W. Loughary And Barrie Hopson. Association Press Follett Publ, 1979.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.