Summers, G. J., & Summers, G. J. (1972). Test your logic: 50 puzzles in deductive reasoning. New York, New York: Dover.
Chicago Style CitationSummers, George J., and George J. Summers. Test Your Logic: 50 Puzzles in Deductive Reasoning. New York, New York: Dover, 1972.
MLA CitationSummers, George J., and George J. Summers. Test Your Logic: 50 Puzzles in Deductive Reasoning. New York, New York: Dover, 1972.
Warning: These citations may not always be 100% accurate.