@book{44900,
	author = {Babbie, Earl R. and Betkiewicz, Witold.},
	title = {Badania społeczne w praktyce /},
	publisher = {Wydaw. Naukowe PWN,},
	year = {2004.},
	address = {Warszawa :},
	note = {Tyt. oryg.: "The practice of social research" 2001.},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=44900}
}