@book {31837,
	title = {Environmental Politics},
	series = {Doing away with plastic shopping bags: International patterns of norm emergence and policy implementation},
	year = {2009},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-70449413831\&partnerID=MN8TOARS},
	author = {Clapp, J. and Swanston, L.}
}