@book{13135,
	author = {Ockham, Guillermo de},
	title = {Suma de lógica},
	publisher = {Norma, },
	year = {1994},
	series = {Cara y cruz},
	address = {Santafé de Bogotá : },
	note = {Encuadernado con A propósito de Guillermo de Ockham y su obra.  }
}