@book{42116,
	author = {Barry, Peter},
	title = {Beginning theory :},
	publisher = {Manchester University Press ;},
	year = {2018.},
	series = {Beginnings},
	address = {Manchester ;},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/bios/hol051/2002026448.html}
}