↑"SPORTS CITY". Kamakura Shobo (in Japanese). 1 (2): 32. 1981.
↑"Honke Bruce Lee wo shinogu Chiba Shinichi" [Shinichi Chiba surpasses Bruce Lee as the movie star of martial arts]. Sports Hōchi (in Japanese). 27 December 1974.
↑Katabutsu Nakamura (1999). Kyokushingaiden - Kyokushinkarate Mōhitotsunotatakai [Supplementary biography of Kyokushin - Kyokushinkarate's another battle] (in Japanese). Pípurusha. pp. 172–186. ISBN4893741373.
↑Tetsurō Takahira (18 May 2011). "JJ Sonny Chiba Majimesa to yasashisaniafure" [JJ Sonny Chiba - His seriousness and tenderness]. ZAKZAK (in Japanese). Yūkan Fuji. Archived from the original on 19 December 2013. Retrieved 30 December 2013.