Straits Settlements. Population, Vital and Housing Statistics Population According to the Census Taken on 1st April, 1931, 1,114,015 Estimated Population Mid-Year 1934, 1,057,108 1934  [microform article]. 

 - Great Britain :  Public Record Office,  1971 
<br/><br/> pages 300-301  PTSL : Koleksi Media