@book{20131,
	author = {Date, C. J.},
	title = {Wprowadzenie do baz danych /},
	year = {1981.},
	series = {Informatyka},
	address = {Warszawa,},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=20131}
}