"Klimatafel von Khartoum / Sudan"(PDF). Baseline climate means (1961-1990) from stations all over the world (in German). Deutscher Wetterdienst. Archived from the original(PDF) on 5 March 2017. Retrieved 22 October 2016.
"Klimatafel von Khartoum / Sudan"(PDF). Baseline climate means (1961-1990) from stations all over the world (in German). Deutscher Wetterdienst. Archived from the original(PDF) on 5 March 2017. Retrieved 22 October 2016.