[1] [CITE@ja[皇代暦 - Wikipedia]]
([TIME[2020-06-09 21:07:57 +09:00]])
<https://ja.wikipedia.org/wiki/%E7%9A%87%E4%BB%A3%E6%9A%A6>

[2] [CITE[歴代皇紀]]
([TIME[2020-06-28 20:39:37 +09:00]])
<http://base1.nijl.ac.jp/iview/Frame.jsp?DB_ID=G0003917KTM&C_CODE=0091-001401>