Reconsideration to the controversy about Japanese Language Education by Unit Method in Showa 20's-In case of a subject of ability-. Bulletin of the Faculty of Education, Hiroshima University. 1998. 46. 11
Changes of Japanese Language Education by Unit Method in the latter half of Showa 20's-In case of an elementary school attached to hiroshima university-. Bulleein of the Faculty of Education, Hiroshima University. 1997. 45. 23