PROFESSOR TORAO OBONAI (1899–1968) 論文 Koji Sato ·1969 ·『PSYCHOLOGIA』 12(2) pp. 63-64 doi:10.2117/psysoc.1969.63
THE LATE PROFESSOR TORAO OBONAI AND HIS PSYCHOLOGICAL WORKS 論文 Takayoshi KANEKO ·1969 ·『PSYCHOLOGIA』 12(3-4) pp. 186-188 doi:10.2117/psysoc.1969.186