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
Writers' Program of the Work Projects Administration in the Commonwealth of Pennsylvania and Pennsylvania Historical Commission and University of Pennsylvania,Pennsylvania : a guide to the Keystone state,,Oxford University Press,1940,American guide series,,,,https://cir.nii.ac.jp/crid/1130000795991563776