@book{89798,
	author = {Merrill, Samuel, and Grofman, Bernard. and ebrary, Inc.},
	title = {A unified theory of voting},
	publisher = {Cambridge University Press,},
	year = {1999.},
	address = {Cambridge, UK ;},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10064276}
}