Doyle, R. E. (1998). Essential skills and strategies in the helping process: Robert E. Doyle. Pacific Grove, Calif: Brooks/Cole.
Trích dẫn kiểu ChicagoDoyle, Robert E. Essential Skills and Strategies in the Helping Process: Robert E. Doyle. Pacific Grove, Calif: Brooks/Cole, 1998.
Deismireacht MLADoyle, Robert E. Essential Skills and Strategies in the Helping Process: Robert E. Doyle. Pacific Grove, Calif: Brooks/Cole, 1998.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.