@book{50611,
	author = {Nunnally, Jum C. and Bernstein, Ira H.},
	title = {Psychometric theory /},
	publisher = {Tata McGraw-Hill },
	year = {2010},
	series = {McGraw-Hill series in psychology},
	address = {New Delhi},
	edition = {3rd ed},
	note = {Includes bibliographical references and indexes}
}