@book{1118,
	author = {Luria, Aleksandr Romanovich, and Vygotsky, Lev Semenovich,},
	title = {Cognitive development :},
	publisher = {Havard University Press,},
	year = {c1976.},
	series = {Life-span human development series},
	address = {Cambridge, Massachusets Press. :},
	note = {Includes indexes.}
}