"宮古郡" [Miyako District]. Kokushi Daijiten (in Japanese). Tokyo: Shogakukan. 2013. OCLC683276033. Archived from the original on 2007-08-25. Retrieved 2013-06-28.
"宮古郡" [Miyako District]. Nihon Rekishi Chimei Taikei (in Japanese). Tokyo: Shogakukan. 2013. OCLC173191044. Archived from the original on 2007-08-25. Retrieved 2013-06-28.
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"宮古郡" [Miyako District]. Kokushi Daijiten (in Japanese). Tokyo: Shogakukan. 2013. OCLC683276033. Archived from the original on 2007-08-25. Retrieved 2013-06-28.
"宮古郡" [Miyako District]. Nihon Rekishi Chimei Taikei (in Japanese). Tokyo: Shogakukan. 2013. OCLC173191044. Archived from the original on 2007-08-25. Retrieved 2013-06-28.
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"宮古郡" [Miyako District]. Kokushi Daijiten (in Japanese). Tokyo: Shogakukan. 2013. OCLC683276033. Archived from the original on 2007-08-25. Retrieved 2013-06-28.
"宮古郡" [Miyako District]. Nihon Rekishi Chimei Taikei (in Japanese). Tokyo: Shogakukan. 2013. OCLC173191044. Archived from the original on 2007-08-25. Retrieved 2013-06-28.