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Takasawa, Hitoshi (1 September 2011). Irasuto Zukai Kamon (First ed.). Tokyo, Japan: Nitto Shoin Honsha. pp. 59–61. ISBN978-4-528-01934-8. Archived from the original on 25 February 2021. Retrieved 11 June 2015.
web.archive.org
Takasawa, Hitoshi (1 September 2011). Irasuto Zukai Kamon (First ed.). Tokyo, Japan: Nitto Shoin Honsha. pp. 59–61. ISBN978-4-528-01934-8. Archived from the original on 25 February 2021. Retrieved 11 June 2015.