Dickins, S. J. (1910). Grenfell of the Congo: Pioneer missionary and explorer (4th ed.). National Sunday School Union.
Lua i Stíl Chicago (17ú heag.)Dickins, Shirley J. Grenfell of the Congo: Pioneer Missionary and Explorer. 4th ed. London: National Sunday School Union, 1910.
Lua MLA (8ú heag.)Dickins, Shirley J. Grenfell of the Congo: Pioneer Missionary and Explorer. 4th ed. National Sunday School Union, 1910.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.