1. Quoted by Copeland;Campbell;Lancet,1931
2. THE MURUTS OF NORTH BORNEO
3. MALARIA AND RACIAL EXTINCTION
4. Godkins, S. R. S. (1946). Personal communication.
5. Malaria in Borneo. An account of the work of the Malaria Research Department, North Borneo, 1939–42;McArthur,1942