found: Work cat.: Liberia. Bureau of Folkways. The tribes of the Western Province and the Denwoin people, 1955:p. 35 (people known as Deis) p. 57 (many absorbed by Gola, Vai and Mandingo)
found: Holsoe, S. A standardization of Liberian ethnic nomenclature, 1979:p. 13 (Dei; also known as Denwoin, Dewema, Dey, Dewoi, Do; called Daba by Bassa, De by Vai, Dewe, Donoi and Dewoi by Gola)
found: Ethnologue, 2005(Dewoin; a language of Liberia; Montserrado County near the coast and Monrovia; alternate names: De, Dey, Dei, Dewoi)
found: Peoplegroups.org, viewed Mar. 16, 2006(Dewoin; other names: Dei, De)
found: Thesaurus of African languages, 1987(Dewoin)