The acquisition of Japanese numeral classifiers 論文集所収 Kasumi Yamamoto ·2006-08-31 ·『Cambridge University Press eBooks』 pp. 69-75 doi:10.1017/cbo9780511758652.012
Heritage Language Literacy: A Study of US Biliterates 論文 Lucy Tse ·2001-12-01 ·『Language Culture and Curriculum』 14(3) pp. 256-268 doi:10.1080/07908310108666627