CCrazy SudokuCrazy Sudokude Richard DolanMateriasSudokuEdiciones (1)Crazy Sudoku (2012)Outskirts Press, Incorporated · inglés · ISBN 9781432781668Más obras de Richard DolanBuying US real estateWWelcome to SukoWelcome to SukoUUFOs for the 21st Century MindUFOs for the 21st Century Mind