Forbes, G. (1994). Modern logic: A text in elementary symbolic logic. Oxford University Press.
Chicago Style (17th ed.) CitationForbes, Graeme. Modern Logic: A Text in Elementary Symbolic Logic. New York, NY [u.a.]: Oxford University Press, 1994.
MLA (8th ed.) CitationForbes, Graeme. Modern Logic: A Text in Elementary Symbolic Logic. Oxford University Press, 1994.
Warning: These citations may not always be 100% accurate.