LILLEY,R. (2010). DEALING WITH DIFFICULT PEOPLE. KOGAN PAGE LTD.
Dyfyniad Arddull ChicagoLILLEY,R. DEALING WITH DIFFICULT PEOPLE. NEW-YORK: KOGAN PAGE LTD, 2010.
Dyfyniad MLALILLEY,R. DEALING WITH DIFFICULT PEOPLE. KOGAN PAGE LTD, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.