著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
"Maitland, Frederic William and Fifoot, C. H. S. (Cecil Herbert Stuart)",The letters of Frederic William Maitland,,Seldon Society,1965,Selden Society. Supplementary series,,,,https://cir.nii.ac.jp/crid/1130282273181924224