@book{70732,
	author = {Berk, Ronald A.},
	title = {Educational evaluation methodology},
	publisher = {Johns Hopkins University Press},
	year = {c1981.},
	address = {Baltimore},
	note = {"A product of the second annual Johns Hopkins University National Symposium on Educational Research (NSER), held in Washington, D.C., in November 1979"-- Pref.}
}