Service Marketing ........
 Buku Teks
News Service
Prague : The Press and Information Department
 Majalah, Jurnal, Buletin
Lucas, Robert W.
Customer service
[publisher not identified], [date of publication not identified]
 Buku Teks SO
Fitzsimmons, James A.
Service management : service model software
2004
 Multimedia
Denton, D. Keith
The service trainer handbook : managing service businesses in the 1990's
McGraw-Hill, 1992
 Buku Referensi