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 Commission of the European Communities. Directorate-General XXIII. Tourism unit and Econstat,Taking account of environment in tourism development,,Office for Official Publications of the European Communities,1994,Studies,,9282665011,,https://cir.nii.ac.jp/crid/1130000797156590336