Umali, P. S. M. (2007). Logic: The art of living with reason. Mindshapers.
Chicago Style aipamenaUmali, Pepe San Miguel. Logic: The Art of Living with Reason. Manila: Mindshapers, 2007.
MLA aipamenaUmali, Pepe San Miguel. Logic: The Art of Living with Reason. Mindshapers, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.