著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Kurt W. ACKERMANN,Approach to Extensive Reading and Determination of Student Reading Levels (RL),"北星学園大学短期大学部北星論集 = Hokusei review, Junior College",13480820,札幌 : 北星学園大学,2016-03,,14,29-33,https://cir.nii.ac.jp/crid/1520009407938401152,