@book{11655,
	author = {Niebuhr, Reinhold },
	title = {Man's nature and his communities},
	publisher = {Charles Scribner's Sons, },
	year = {c1965},
	address = {New York : },
	edition = {1 ed.},
	note = {Ensayos sobre la naturaleza del hombre, su existencia personal y social}
}