@book{48618,
	author = {Carmines, Edward G. and Zeller, Richard A.},
	title = {Reliability and validity assessment},
	publisher = {Sage Publications},
	year = {c1979.},
	series = {A Sage university paper. Quantitative applications in the social sciences},
	address = {Beverly Hills, Calif.},
	note = {920518}
}