Santiago, A. S. (1996). Logic: The art of reasoning (with introduction to symbolic logic). s.n.
Dyfyniad Arddull ChicagoSantiago, Alma Salvador. Logic: The Art of Reasoning (with Introduction to Symbolic Logic). s.l: s.n, 1996.
Dyfyniad MLASantiago, Alma Salvador. Logic: The Art of Reasoning (with Introduction to Symbolic Logic). s.n, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.