@book{5707,
	author = {Siwoń, Bolesław.},
	title = {Jak liczy menedżer? /},
	publisher = {Wydaw. Naukowe PWN,},
	year = {1992.},
	series = {Ekonomia Na Co Dzień},
	address = {Warszawa :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=5707}
}