(en) Seth, « Andreas Riis: a lifetime of colonial drama », Research Review of the Institute of African Studies, vol. 21, (lire en ligne)
archive.org
(de) Geographische Gesellschaft (für Thüringen) zu Jena, Mitteilungen, G. Fischer., (lire en ligne), 77
books.google.com
(en) Ulrike Sill, Encounters in Quest of Christian Womanhood : The Basel Mission in Pre- and Early Colonial Ghana, BRILL, , 420 p. (ISBN978-90-04-18888-4, lire en ligne)
(de) Geographische gesellschaft (für Thüringen) zu Jena, Mitteilungen der Geographischen gesellschaft (für Thüringen) zu Jena, G. Fischer, (lire en ligne)
(en) Peter Hall, Autobiography of Rev. Peter Hall : First Moderator of the Presbyterian Church of Ghana, Waterville Publishing House, (lire en ligne)
(en) Paul Jenkins, The Recovery of the West African Past : African Pastors and African History in the Nineteenth Century : C.C. Reindorf & Samuel Johnson : Papers from an International Seminar Held in Basel, Switzerland, 25-28th October 1995 to Celebrate the Centenary of the Publication of C.C. Reindorf's History of the Gold Coast and Asante, Basler Afrika Bibliographien, , 212 p. (ISBN978-3-905141-70-2, lire en ligne)
(en) Carina E. Ray, Crossing the color line : race, sex, and the contested politics of colonialism in Ghana, Athens, Ohio, Ohio University Press, (ISBN978-0-8214-4539-6, lire en ligne)
(en) Peter Alexander Schweizer, Survivors on the Gold Coast : The Basel Missionaries in Colonial Ghana, Smartline Pub., , 201 p. (ISBN978-9988-600-01-3, lire en ligne)
doi.org
dx.doi.org
(en) Kwakye, « Returning African Christians in Mission to the Gold Coast », Studies in World Christianity, Edinburgh University Press, vol. 24, no 1, , p. 25–45 (DOI10.3366/swc.2018.0203)
(en) Veit, Christianity, imperialism and culture : the expansion of the two Krobo states in Ghana, c. 1830 to 1930, Université de Bâle, (DOI10.5451/unibas-003662454, lire en ligne)
(en) Veit, Christianity, imperialism and culture : the expansion of the two Krobo states in Ghana, c. 1830 to 1930, Université de Bâle, (DOI10.5451/unibas-003662454, lire en ligne)