"小学校の必修漢字に都道府県名20字追加 20年度にも" [20 characters of prefectures added to the mandatory kanji of primary schools―academic year 2020]. Asahi Shimbun. 2016-05-18. Archived from the original on 2016-05-18. Retrieved 2016-06-18.
"小学校の必修漢字に都道府県名20字追加 20年度にも" [20 characters of prefectures added to the mandatory kanji of primary schools―academic year 2020]. Asahi Shimbun. 2016-05-18. Archived from the original on 2016-05-18. Retrieved 2016-06-18.