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Nakazawa 1976, p. 42. Nakazawa, Kanao (31 March 1976). "Yamamoto Kanae no geijutsu shisō to jiyūga kyōiku-ron" 山本鼎の芸術思想と自由画教育論 [Idea on fine art of Kanae Yamamoto and his educational theory of the "Jiyuga (Children's free drawing)"]. Jinbun Gakuhō (11): 37–89. hdl:10748/2947.