[1] 傘連判状 - Wikipedia (9/15/2020, 5:00:42 AM, 9/29/2020, 11:49:01 AM) https://ja.wikipedia.org/wiki/%E5%82%98%E9%80%A3%E5%88%A4%E7%8A%B6

[2] 書字方向放射状

[3] File:Sabal Tongmun.jpg - Wikimedia Commons, 12/25/2023, 11:12:54 AM, 1/8/2024, 11:13:11 AM https://commons.wikimedia.org/wiki/File:Sabal_Tongmun.jpg

[4] >>3 李氏朝鮮の東学党の乱における同様の署名