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) Brandon Kramer and Tohru Matuso and Aaron Sponseller and YoungAe Kim and Suzuka Nishiyama and Stuart McLean,Measuring Attrition of L2 Productive Vocabulary Knowledge Over the Summer Vacation,Vocabulary Learning and Instruction,2187-2759,Vocabulary Learning and Instruction,2021-12-31,10,2,1-8,https://cir.nii.ac.jp/crid/1360857593745162752,https://doi.org/10.7820/vli.v10.2.kramer