@book{96642,
	author = {Campbell, Donald T., and Stanley, Julian C.,},
	title = {Experimental and quasi-experimental designs for research /},
	publisher = {Houghton Mifflin,},
	year = {1963},
	address = {Boston :},
	note = {"This survey originally appeared in N.L. Gage (editor), Handbook of research on teaching, published by Rand McNally & Company in 1963, under the longer title 'Experimental and quasi-experimental designs for research on teaching'."--Pref.}
}