Analysis of information sources in references of the Wikipedia article "Mahdist State" in English language version.
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: CS1 maint: multiple names: authors list (link) wherein it does not appear either. Nicoll, Fergus (19 May 2005). The Mahdi of Sudan and the Death of General Gordon. The History Press Ltd. ISBN 978-0750932998.Estimates cite that the population of Sudan fell from seven million before the Mahdist revolt to between two and three million after the end of the Mahdist era.
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: CS1 maint: multiple names: authors list (link) wherein it does not appear either. Nicoll, Fergus (19 May 2005). The Mahdi of Sudan and the Death of General Gordon. The History Press Ltd. ISBN 978-0750932998.