Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SEKI Kazuko and TOMINAGA Atsuko and KOGO Chiharu,A Study on Retrospection and Prospect of Adult Learners Who Graduated from an Online University,Japan Journal of Educational Technology,13498290,Japan Society for Educational Technology,2014,38,2,101-112,https://cir.nii.ac.jp/crid/1390001205228939648,https://doi.org/10.15077/jjet.kj00009595643