@book{43692,
	author = {SZELIGA, Marcin},
	title = {ABC języka SQL /},
	publisher = {"Helion",},
	year = {cop. 2002.},
	address = {Gliwice :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=43692}
}