MOTHER TONGUE MAINTENANCE AND SECOND LANGUAGE LEARNING: A CASE OF JAPANESE CHILDREN 論文 Fumiko Okamura‐Bichard ·1985-03-01 ·『Language Learning』 35(1) pp. 63-89 doi:10.1111/j.1467-1770.1985.tb01015.x
The Meaning of Prolonged Inspection from the Standpoint of Creation 論文 Hitoshi Sakurabayashi ·1953-01-01 ·『The Japanese journal of psychology』 23(4) pp. 207-216 doi:10.4992/jjpsy.23.207