1963-07-09 ) ; Agreement amending the above-mentioned Agreement, signed at Singapore on 28 August 1963 ( 1963-08-28 ) . Agreement Relating to Malaysia between UK, Malaya , N. Borneo , Sarawak and Singapore in Malay texts. Malaysia Act 1963 Cabinet Memorandum. Policy in regard to Malaya and Borneo. Memorandum by the