1. The Influence of European Culture on Australian Aborigines;Berndt;Oceania,1951
2. Capellman , A. P. 1901 Medicina Pastoralis . Société Belge de Librairie, Bruxelles (printed in Latin
3. Mental Disorder in Rural Ghana;Field;The Journal of Mental Science,1958
4. Gil , Rev. Fr. Thomas 1934a A Short Catholic Catechism The Life of our Lord.” Typewritten in the “Pela” language, 1934. Copy seen at the Kalumburu Mission