@book{4565,
	author = {Nordberg, H. Orville and Bradfield, James M.},
	title = {La enseñanza en la escuela secundaria / H. Oville Nordberg, James M. Bradfield, William C. Odell},
	publisher = {El Ateneo},
	year = {1970},
	address = {Buenos Aires},
	edition = {2ª ed.},
	note = {Contenido:}
}