@book{36217,
	author = {Berger, Peter L. and Luckmann, Thomas.},
	title = {The social construction of reality :},
	publisher = {Penguin Books,},
	year = {1991.},
	address = {London :},
	note = {Reprint. Originally published: Garden City, N.Y. : Doubleday, 1966.}
}