Energy Information Administration 2007, 'Country analysis brief: Sudan'Archived 13 March 2008 at the Wayback Machine, www.eia.doe.gov, April. Retrieved on 6 March 2008. (Estimates that oil comprises 70% of all exports.)
European Coalition on Oil in Sudan 2007, 'ECOS Fact Sheet'Archived 13 September 2008 at the Wayback Machine, www.ecosonline.org, October, p. 1. Retrieved on 6 March 2007. (Estimates that oil accounts for 90% of all exports.)
European Coalition on Oil in Sudan 2007, 'ECOS Fact Sheet'Archived 13 September 2008 at the Wayback Machine, www.ecosonline.org, October, p. 4. Retrieved on 6 March 2007.
This article incorporates text from this source, which is in the public domain: DeLancey, Virginia (2015). "Mining"(PDF). In Berry, LaVerle (ed.). Sudan: a country study (5th ed.). Washington, D.C.: Federal Research Division, Library of Congress. pp. 196–197. ISBN978-0-8444-0750-0. Though published in 2015, this work covers events in the whole of Sudan (including present-day South Sudan) until the 2011 secession of South Sudan.
This article incorporates text from this source, which is in the public domain: DeLancey, Virginia (2015). "Labor Force"(PDF). In Berry, LaVerle (ed.). Sudan: a country study (5th ed.). Washington, D.C.: Federal Research Division, Library of Congress. pp. 164–166. ISBN978-0-8444-0750-0. Though published in 2015, this work covers events in the whole of Sudan (including present-day South Sudan) until the 2011 secession of South Sudan.
This article incorporates text from this source, which is in the public domain: DeLancey, Virginia (2015). "Energy"(PDF). In Berry, LaVerle (ed.). Sudan: a country study (5th ed.). Washington, D.C.: Federal Research Division, Library of Congress. pp. 192–196. ISBN978-0-8444-0750-0. Though published in 2015, this work covers events in the whole of Sudan (including present-day South Sudan) until the 2011 secession of South Sudan.
nationsencyclopedia.com
"Sudan Agriculture". Nations Encyclopedia. Archived from the original on 7 October 2008. Retrieved 30 August 2008.
"Sudan Agriculture". Nations Encyclopedia. Archived from the original on 7 October 2008. Retrieved 30 August 2008.
Energy Information Administration 2007, 'Country analysis brief: Sudan'Archived 13 March 2008 at the Wayback Machine, www.eia.doe.gov, April. Retrieved on 6 March 2008. (Estimates that oil comprises 70% of all exports.)
European Coalition on Oil in Sudan 2007, 'ECOS Fact Sheet'Archived 13 September 2008 at the Wayback Machine, www.ecosonline.org, October, p. 1. Retrieved on 6 March 2007. (Estimates that oil accounts for 90% of all exports.)
European Coalition on Oil in Sudan 2007, 'ECOS Fact Sheet'Archived 13 September 2008 at the Wayback Machine, www.ecosonline.org, October, p. 4. Retrieved on 6 March 2007.