* "The international language Esperanto, common language for Africa, common language for the world," translated from Esperanto to English by John Christopher Wells, Rotterdam: UEA, 1962, 11 pages.
* "The international language Esperanto, common language for Africa, common language for the world," перевод с эсперанто на английский язык выполнен Джоном Кристофером Уэллсом, Роттердам: UEA, 1962, 11 стр.