"Bōsō-hantō". Nihon Daihyakka Zensho (Nipponika) (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-19.
"Bōsō Peninsula". Encyclopedia of Japan. Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-19.
"Bōsō-hantō". Nihon Kokugo Daijiten (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-02-28.
"Atago-yama". Nihon Daihyakka Zensho (Nipponika) (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-19.
web.archive.org
"Bōsō-hantō". Nihon Daihyakka Zensho (Nipponika) (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-19.
"Bōsō Peninsula". Encyclopedia of Japan. Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-19.
"Bōsō-hantō". Nihon Kokugo Daijiten (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-02-28.
"Atago-yama". Nihon Daihyakka Zensho (Nipponika) (in Japanese). Tokyo: Shogakukan. 2012. Archived from the original on 2007-08-25. Retrieved 2012-05-19.