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.
Citación estilo Chicago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.
Cita 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.
警告：这些引文格式不一定是100％准确.