@book{5721,
	author = {Nadstoga, Zbigniew},
	title = {Business letters :},
	publisher = {"Atena",},
	year = {1992.},
	address = {Poznań :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=5721}
}