"Vlajky a znaky Etiopie" [Flags and emblems of Ethiopia]. Vexilolog (in Czech) (8). 2003. Archived from the original on 2018-10-09. Retrieved 2017-05-09.
web.archive.org
Flag Bulletin, Volume 27. Flag Research Center. 1988. p. 11. Archived from the original on 18 October 2023. Retrieved 11 September 2021.
"Vlajky a znaky Etiopie" [Flags and emblems of Ethiopia]. Vexilolog (in Czech) (8). 2003. Archived from the original on 2018-10-09. Retrieved 2017-05-09.