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 India. Office of the Registrar General. Social Studies Division,Availability of infrastructural facilities in rural areas of Kerala : an analysis of village directory data,,Controller of Publications,1996,"Census of India, 1991",,,,https://cir.nii.ac.jp/crid/1130282270320388480