https://youtu.be/_NtieWocJCo?si=Lkk1FGD_QqPdPMRf

https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://dokumen.pub/download/the-best-course-available-a-personal-account-of-the-secret-us-japan-okinawa-reversion-negotiations-9780824864613.html&ved=2ahUKEwi045b9rdKKAxWfs1

https://www.shugiin.go.jp/internet/itdb_annai.nsf/html/statics/shiryo/yokomichi_takahiro.html

https://j-dac.jp/KUSUDA/bunrui.html 楠田實