@book{184473,
	author = {Esbensen, Steen B. and High/Scope Educational Research Foundation.},
	title = {El salón de clases en el área exterior},
	publisher = {Trillas},
	year = {1996.},
	address = {México, DF},
	edition = {Preedición},
	note = {Translation of: An outdoor classroom.}
}