Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) MASAKI Katsuhiko,Using Songs in Elementary School English Activity Classes : A Study of Effectiveness,LET関西支部研究集録 = LET Kansai Chapter collected papers,21850747,寝屋川 : 外国語教育メディア学会 (LET) 関西支部,2015,,15,21-41,https://cir.nii.ac.jp/crid/1520853835383132928,