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WikiPedia: Gia_tộc_Ashikaga //books.google.com/books?id=p2QnPijAEmEC&pg=PA53 //books.google.com/books?id=p2QnPijAEmEC&pg=PA54 //books.google.com/books?id=p2QnPijAEmEC&pg=PA55 //books.google.com/books?id=p2QnPijAEmEC&pg=PA56 //books.google.com/books?id=p2QnPijAEmEC&pg=PA57 http://dispatch.opac.ddb.de/DB=4.1/PPN?PPN=1288427... http://www.worldcat.org/oclc/58053128?referer=di&h... https://books.google.com/books?id=p2QnPijAEmEC&cli... https://archive.org/details/historyofjapan00sans https://archive.org/details/historyofjapan00sans/p...