@book{47329,
	author = {WAJNRYB, Ruth},
	title = {Classroom observation tasks :},
	publisher = {Cambridge Univ. Press,},
	year = {1992.},
	series = {Cambridge teacher training and development / Ruth Gairns and Marion Williams, series ed.},
	address = {Cambridge [etc.] :},
	url = {http://koha.tu.koszalin.pl/cgi-bin/koha/opac-detail.pl?biblionumber=47329}
}