修兹. (2009). 数独精选100题 4: Sudoku to boost your brainpower persented by Will Shortz. 北京理工大学出版社.
Chicago Style (17th ed.) Citation修兹. 数独精选100题 4: Sudoku to Boost Your Brainpower Persented by Will Shortz. 北京理工大学出版社, 2009.
ציטוט MLA修兹. 数独精选100题 4: Sudoku to Boost Your Brainpower Persented by Will Shortz. 北京理工大学出版社, 2009.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.