Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Bill Harshbarger,"Chaos, complexity and language learning",ICU language research bulletin = 語学研究,09133615,[三鷹] : 国際基督教大学教養学部語学科,2007,22,,17-31,https://cir.nii.ac.jp/crid/1520853833556889216,