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
"Elkins, Charles and Greenberg, Martin Harry",Robert Silverberg's many trapdoors : critical essays on his science fiction,,Greenwood Press,1992,Contributions to the study of science fiction and fantasy,,0313263086,,https://cir.nii.ac.jp/crid/1130000794565293312