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 "Whitehead, John",The design and analysis of sequential clinical trials,Rev. 2nd ed,J. Wiley,1997,Statistics in practice,,0471975508,,https://cir.nii.ac.jp/crid/1130282272466407040