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Katsudon Katsudō Shashin KatsuwonusTài liệu tham khảo
WikiPedia: Katsudon http://japanesefood.about.com/od/pork/r/katsudon.h... https://books.google.com/books?id=E7gDCgAAQBAJ&pg=... https://books.google.com/books?id=mF4me5AKc-wC&pg=...