SILVERSTEIN BARRY. (2007). BEST PRACTICES: MANAGING PEOPLE. HARPER COLLINS PUBLISHERS.
Dyfyniad Arddull ChicagoSILVERSTEIN BARRY. BEST PRACTICES: MANAGING PEOPLE. NEW YORK: HARPER COLLINS PUBLISHERS, 2007.
Dyfyniad MLASILVERSTEIN BARRY. BEST PRACTICES: MANAGING PEOPLE. HARPER COLLINS PUBLISHERS, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.