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 "Westacott, H. D. and Richards, Mark",The Brecon Beacons National Park,,Penguin Books,1983,The Penguin footpath guides,,0140469079,,https://cir.nii.ac.jp/crid/1130282271621227008