@book{4731,
	author = {Graver, B. D.},
	title = {Advanced English practice /},
	publisher = {Oxford University Press,},
	year = {1986.},
	address = {Oxford :},
	edition = {3. ed.},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=4731}
}