”Kinsei, kindai ni okeru Sumitomoke no kakun to kahô – Kagyô keiei to no kanrensei ni tsuite” (“The Household Codes of Izumiya-Sumitomo in the Tokugawa and Meiji Periods and Their Relation to Business Management”)

Nihongo, Nihon bunka kenkyû (Studies in Japanese Language and Culture). Osaka University of Foreign Studies.