@book{54839,
	author = {Czarny, Piotr},
	title = {Ubuntu Linux /},
	publisher = {Wydawnictwo Helion,},
	year = {cop. 2006.},
	series = {Ćwiczenia},
	address = {Gliwice :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=54839}
}