Sivesan,S.(2011). Business Study. Colombo: Lanka Book Depot (Pvt) LTD.
Sivesan,S.(2011). Introduction to Service Marketing. Colombo: Chemamadu Poththakasalai.
Sivesan,S.(2011). Business Study. Colombo: Lanka Book Depot (Pvt) LTD.
Sivesan,S.(2011). Introduction to Service Marketing. Colombo: Chemamadu Poththakasalai.