@book{79371,
	author = {Thuynsma, Heather A. and ebrary, Inc.},
	title = {Public opinion and interest group politics},
	publisher = {Africa Institute of South Africa,},
	year = {2012.},
	address = {Pretoria :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10574641}
}