@book{6718,
	author = {Birch, Anthony Harold.},
	title = {The british system of government /},
	publisher = {Allen and Unwin,},
	year = {1973.},
	series = {Minerva series of students' handbooks, no. 20 / George allen and unwin},
	address = {London :},
	edition = {[3rd] revised ed.}
}