TY - BOOK AU - Martin,William B. TI - Perkhidmatan pelanggan yang berkualiti T2 - Siri pengurusan 50 minit SN - 9835003920 U1 - 658.812 23 PY - 1994/// CY - Johor Bahru, Johor : PB - Penerbitan Pelangi , KW - Customer services Programmed instructions. ; Customer relations Programmed instructions ER -