Smullyan, R. M. (1997). The Riddle of Scheherazade and Other Amazing Puzzles, Ancient & Modern. Harcourt.
Lua i Stíl Chicago (17ú heag.)Smullyan, Raymond M. The Riddle of Scheherazade and Other Amazing Puzzles, Ancient & Modern. Orlando: Harcourt, 1997.
Lua MLA (9ú heag.)Smullyan, Raymond M. The Riddle of Scheherazade and Other Amazing Puzzles, Ancient & Modern. Harcourt, 1997.
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