@book{54446,
	author = {Biber, Douglas. and Conrad, Susan.},
	title = {Longman student grammar of spoken and written English /},
	publisher = {Pearson Education :},
	year = {2002.},
	address = {Harlow, England :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=54446}
}