Citation:Gunaruwan, T. Lalithasiri (2016) Preferential Trade Liberalization through Bilateral or Regional Agreements: Need for a National Strategic Approach for ETCA and Beyond, In: Proceedings of the 5th International Conference of Sri Lanka Forum of University Economists, 22-23 December 2016, Department of Economics Faculty of Social Sciences University of Kelaniya, Sri Lanka, 172-177 pp.