Sumitomo Group

"Sumitomo" wa naze tsuyoi no ka: Cho yuryo kigyo shudan Sumitomo gurupu no himitsu

Saburo Yuki

Sumitomo Gurūpu no subete: shin kigyō shūdan kenkyū

Kondō Hiroshi cho.

Kankei-gaisha sōran.

[Kobayashi Rabo henshū].

フランス絵画の贈り物: totte oita meiga = Cadeaux pour la vie : les tableaux français précieux

[henshū Noji Kōichirō]

Henkaku no hasso (Honoo no otokotachi : Sumitomo)

Ōbunsha

Sumitomo Gurūpu no kenkyū

Kikuchi Hiroyuki

"Sumitomo" wa naze tsuyoi no ka: chō yūryō kigyō shūdan Sumitomo gurūpu no himitsu

Yūki Saburō.

Sumitomo honsha keieishi

Yamamoto Kazuo cho

Mitsubishi tai Sumitomo: Nihon keizai no shudōken arasoi

Kameoka Tarō

Sumitomo no rekishi

kanshū Asao Naohiro ; henshū Sumitomo Shiryōkan