Hiroyuki Kikuchi

1963

• Nihon no 15-dai zaibatsu
• Kigyō shūdan no keisei to kaitai
• Mitsui, Mitsubishi, Sumitomo, Fuyō, Sanwa, Ichikan
• Nihon no 15 dai dōzoku kigyō
• Nihon no chihō zaibatsu 30-ke
• Oda kashindan no nazo
• Sumitomo Gurūpu no kenkyū