O'Beirne, T. H. (1965). Puzzles and paradoxes. London : Oxford University Press.
Cita Chicago (17th ed.)O'Beirne, T. H. Puzzles and Paradoxes. London : Oxford University Press, 1965.
Cita MLA (9th ed.)O'Beirne, T. H. Puzzles and Paradoxes. London : Oxford University Press, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.