Quelle: „Construction sheet of the Japanese flag“ von Zscout370 - Eigenes Werk, based on http://law.e-gov.go.jp/htmldata/H11/H11HO127.html. Lizenziert unter GFDL über Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Construction_sheet_of_the_Japanese_flag.svg#/media/File:Construction_sheet_of_the_Japanese_flag.svg