@book{123951,
	author = {Hurlock, Elizabeth B. },
	title = {Child development /},
	publisher = {McGraw-Hill Kogakusha,},
	year = {1972.},
	series = {McGraw- Hill series in psychology. },
	address = {Tokyo :},
	edition = {5 th, int. stu. },
	note = {Bibliography : p. 490-494.}
}