@book{291,
	author = {Berger, Peter L. and Luckmann, Thomas.},
	title = {The Social construction of reality :},
	publisher = {Penguin Books,},
	year = {c1991.},
	series = {Penguin university books},
	address = {England:},
	url = {https://opac.eui.eu/client/en_GB/default/search/detailnonmodal/ent:$002f$002fSD_ILS$002f0$002fSD_ILS:389775/one}
}