Kaientai

Sakamoto Ryōma

Chikami Kiyoomi cho

Nihon de hajimete kabushiki-gaisha o tsukutta otoko, Sakamoto Ryōma

Miyaji Saichirō

Sakamoto Ryoma Kaientai taishi retsuden

Ichirō Yamada

Sakamoto Ryōma kankei shashinshū

Sakamoto Noboru, Miyoshi Harutaka, Kaiho Yukiyasu kanshū ; Morishige Kazuo, Kuramochi Motoi hen

Ryoma Kaientai: Yume to kokorozashi

Takano, Kiyoshi

Sakamoto Ryōma: rekishi daijiten

Sakamoto Ryoma to Kaientai: Nihon o kaeta otoko no bijinesu-damashii

Fujiyoshi Sakamoto

Sakamoto Ryōma: Tosa Kaientai

Tomita Tsuneo.

Sakamoto Ryōma: rekishi no hatō ni idonda seishun.

Gakushū Kenkyūsha

Sakamoto Ryōma Kaientai shimatsuki

Hirao Michio cho