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2. Asahi jānaru. “Dokusha kara.” June 8, 1969.
3. Asahi Shimbun. “Chisai, 5nin no hoshaku kettei: chiken wa teishi mōshitate.” July 5, 1969.
4. Asahi Shimbun. “Hōgakubuchō ni hirano kyōju.” January 23, 1969.
5. Asahi Shimbun. “Katai kuchi mo hogureru tōdai jiken kōchi gakusei ‘furusato no haha’ ni horori - tōdaifunsō.” January 31, 1969.