APA (7th ed.) Citation

严德人著. (2007). 竞技数独. 中国言实出版社.

Chicago Style (17th ed.) Citation

严德人著. 竞技数独. 中国言实出版社, 2007.

MLA (8th ed.) Citation

严德人著. 竞技数独. 中国言实出版社, 2007.

Warning: These citations may not always be 100% accurate.