Sahidan, N. S. I. (2008). The effectiveness of Customer Management Department in Telekom Malaysia consumer sales Selangor in retaining their existing customers / Nur Solatul Ima Sahidan. Faculty of Business and Management.

Sahidan, Nur Solatul Ima. The Effectiveness of Customer Management Department in Telekom Malaysia Consumer Sales Selangor in Retaining Their Existing Customers / Nur Solatul Ima Sahidan. Faculty of Business and Management, 2008.

Sahidan, Nur Solatul Ima. The Effectiveness of Customer Management Department in Telekom Malaysia Consumer Sales Selangor in Retaining Their Existing Customers / Nur Solatul Ima Sahidan. Faculty of Business and Management, 2008.