@book{142544,
	author = {Ėlkonin, D. B.},
	title = {Psicología del juego},
	publisher = {P. del Río},
	year = {c1980.},
	series = {Aprendizaje, textos},
	address = {Madrid},
	note = {Translation of: Psikhologiía igry.}
}