Straits Settlements population. Vital and Housing statistics population according to the census taken on 1st April, 1931, 1,114,015 estimated population mid-year 1938, 1,344,545. 1938  [microform article] 

 - Great Britain :  Public Record Office,  1971 
<br/><br/> PTSL : Koleksi Media  Pages 361-365