極刑求め15万人が署名 闇サイト殺人、地検に提出. 47 News (in Japanese). Press Net Japan. Kyodo. 23 October 2007. Archived from the original on 17 July 2011. Retrieved 19 April 2009.
Morishima, M. (22 March 2009). 社説ウオッチング:闇サイト殺人判決 死刑制度前提に容認. The Mainichi Shimbun (in Japanese). Archived from the original on 6 April 2009. Retrieved 10 April 2009.
msn.com
sankei.jp.msn.com
闇サイト殺人 常識に沿った死刑判断だ. The Sankei Shimbun (in Japanese). 19 March 2009. Archived from the original on 21 March 2009. Retrieved 13 April 2009.
NHK Staff (21 October 2022). "死刑囚の肉声から考える 死刑告知は当日か事前か". NHK.or.jp (in Japanese). Tokyo, Japan: NHK. Archived from the original on 2 November 2022. Retrieved 3 February 2023.
nihon-u.ac.jp
atlantic2.gssc.nihon-u.ac.jp
Oyama, Shinichi (2009). "中世武士の生死観(5)" [Shojikan of Bushi in the Middle Ages (5)] (PDF) (in Japanese and English). Nihon University. Archived from the original(PDF) on 16 July 2020. Retrieved 14 February 2020.
Oyama, Shinichi (2009). "中世武士の生死観(5)" [Shojikan of Bushi in the Middle Ages (5)] (PDF) (in Japanese and English). Nihon University. Archived from the original(PDF) on 16 July 2020. Retrieved 14 February 2020.
鋸挽 (in Japanese). Kotobank. Archived from the original on 1 February 2023. Retrieved 1 February 2023.
NHK Staff (21 October 2022). "死刑囚の肉声から考える 死刑告知は当日か事前か". NHK.or.jp (in Japanese). Tokyo, Japan: NHK. Archived from the original on 2 November 2022. Retrieved 3 February 2023.
極刑求め15万人が署名 闇サイト殺人、地検に提出. 47 News (in Japanese). Press Net Japan. Kyodo. 23 October 2007. Archived from the original on 17 July 2011. Retrieved 19 April 2009.
Morishima, M. (22 March 2009). 社説ウオッチング:闇サイト殺人判決 死刑制度前提に容認. The Mainichi Shimbun (in Japanese). Archived from the original on 6 April 2009. Retrieved 10 April 2009.
闇サイト殺人 常識に沿った死刑判断だ. The Sankei Shimbun (in Japanese). 19 March 2009. Archived from the original on 21 March 2009. Retrieved 13 April 2009.