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 "Dreyer, Edward L.","Zheng He : China and the oceans in the early Ming dynasty, 1405-1433",,Pearson Longman,2007,Library of world biography,,0321084438,,https://cir.nii.ac.jp/crid/1130282269689523456