@book{76809,
	author = {Das, Ram Upendra. and Edirisuriya, Piyadasa},
	title = {Regional trade and economic integration:},
	publisher = {World Scientific Publishing Co. Pte. Ltd.,},
	year = {2012.},
	url = {http://portal.igpublish.com/iglibrary/search/WSPCB0002620.html}
}