Report on the proposal made by the Rulers of Federated Malay States in Durbar on the 1st of  November, that two squadron of service aeroplanesshould be presented to the Imperial Government for use in the defence of Malaya.  [microform article] 

 - London :  Public Record Office,  [n.d] 
<br/><br/> PTSL : Koleksi Media  No.57888  Page 24  13 November 1937