"Morel, Edmund Dene". International Encyclopedia of the First World War. International Encyclopedia of the First World War. Retrieved 15 November 2017.
Dorward, David. "Morel, E.D." In Colonialism: An International, Social, Cultural, and Political Encyclopedia, Volume 1. Eds. Melvin Eugene Page and Penny M. Sonnenburg. ABC-CLIO, 2003. p. 392.
Hochschild, Adam. "King Leopold's Ghost." In Africana: The Encyclopedia of the African and African American Experience.
Eds. Anthony Appiah and Henry Louis Gates. Oxford: Oxford University Press, 2005. p. 468