西尾彻也编著. (2008). 数独挑战．KO篇．2. 辽宁教育出版社.
Lua i Stíl Chicago (17ú heag.)西尾彻也编著. 数独挑战．KO篇．2. 辽宁教育出版社, 2008.
Lua MLA (8ú heag.)西尾彻也编著. 数独挑战．KO篇．2. 辽宁教育出版社, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)