Tham khảo Dai_Nippon_Butoku_Kai

  1. ↑ "Konishibunko
  2. 1 2 "What is the Dai Nippon Butoku Kai?
  3. 1 2 3 4 "A Reconsideration of the Dai-Nippon Butokukai in the Purge of Ultra-nationalism and Militarism in Post-war Japan" bởi Alexander Bennett Ph.D.(Đại học Kansai)
  4. ↑ http://www.dnbk.org/ The official website of Dai Nippon Butoku Kai(DNBK)

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