DREAMLAND PUB. (2009). THE GREAT BOOK OF PUZZLES & TEASERS.
Cita Chicago (17th ed.)DREAMLAND PUB. THE GREAT BOOK OF PUZZLES & TEASERS. 2009.
Cita MLA (9th ed.)DREAMLAND PUB. THE GREAT BOOK OF PUZZLES & TEASERS. 2009.
Atenció: Aquestes cites poden no estar 100% correctes.