TY  - GEN
AU  - Ishak Ismail
ED  - Perbadanan Produktiviti Negara
TI  - towards managing the customer service function
PY  - 1993///
CY  - Petaling Jaya, Selangor
PB  - Perbadanan Produktiviti Negara
N1  - PTSL : Dokumen
ER  -