O'Riordan, Joanna. 
Developing an effective internal customer service ethos /  Joanna O'Riordan, Peter C. Humphreys.   - Dublin :  Institute of Public Administration,  2003.   - xii, 57 p. ;  22cm.   - CPMR discussion paper,  24  1393-6190 ; .  - CPMR discussion paper,  24 .