Santiago, A. S. (1996). Logic: The art of reasoning (with introduction to symbolic logic). s.n.
Cita Chicago (17th ed.)Santiago, Alma Salvador. Logic: The Art of Reasoning (with Introduction to Symbolic Logic). s.l: s.n, 1996.
Cita MLA (9th ed.)Santiago, Alma Salvador. Logic: The Art of Reasoning (with Introduction to Symbolic Logic). s.n, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.