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 "Valley, George E. and Wallman, Henry and United States. Office of Scientific Research and Development. National Defense Research Committee",Vacuum tube amplifiers,,McGraw-Hill,1948,Massachusetts Institute of Technology Radiation Laboratory series,,,,https://cir.nii.ac.jp/crid/1130000794568862976