@book {guba_fourth_1989,
	title = {Fourth {Generation} {Evaluation}},
	year = {1989},
	note = {n/a},
	publisher = {Sage},
	organization = {Sage},
	address = {Newbury Park, California},
	abstract = {<p>understanding is the criterion of hermeneutic methodology (p89)</p>
},
	author = {Guba, Egon G. and Lincoln, Yvonna}
}
