[1] [CITE@ja[ニヴフ - Wikipedia]]
([TIME[2024-05-16T01:20:16.000Z]], [TIME[2024-05-27T11:32:32.083Z]])
<https://ja.wikipedia.org/wiki/%E3%83%8B%E3%83%B4%E3%83%95>

[2] [[北日本の日時]]

[3] [[樺太土人]]