@book{912,
	author = {Sax, Gilbert.},
	title = {Foundations of educational research /},
	publisher = {Prentice-Hall,},
	year = {c1979.},
	address = {Englewood Cliffs, N.J. :},
	edition = {2d ed.},
	note = {First ed. published in 1968 under title: Empirical foundations of educational research.}
}