Summers, G. J. (1968). New puzzles in logical deduction. Dover publication.
Chicago Edition CitationSummers, G. J. New Puzzles in Logical Deduction. New York: Dover publication, 1968.
Cita MLASummers, G. J. New Puzzles in Logical Deduction. Dover publication, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.