Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SHIMADA Hideaki and HIRANO Tomoaki,The Effects of Line Spacing and Itemization in Email,Japan Journal of Educational Technology,13498290,Japan Society for Educational Technology,2017,40,Suppl.,5-8,https://cir.nii.ac.jp/crid/1390282680205962368,https://doi.org/10.15077/jjet.s40006