(en) Alfred Burdon Ellis, The Tshi-speaking Peoples of the Gold Coast of West Africa: Their Religion, Manners, Customs, Laws, Language, Etc, Chapman and Hall, (lire en ligne)
(en) A. Jehle, « Soul, Spirit, Fate According to the Notions of the Tshi and Ehwe Tribes (Gold Coast and Togo, W. Africa) », African Affairs, vol. VI, no XXIV, , p. 405–415 (ISSN1468-2621, DOI10.1093/oxfordjournals.afraf.a099169)
(en) A. Jehle, « Soul, Spirit, Fate According to the Notions of the Tshi and Ehwe Tribes (Gold Coast and Togo, W. Africa) », African Affairs, vol. VI, no XXIV, , p. 405–415 (ISSN1468-2621, DOI10.1093/oxfordjournals.afraf.a099169)