Swettenham, Frank Athelstane, British Malaya: An Account of the Origin and Progress of British Influence in Malaya, BiblioBazaar, LLC, 2008, ISBN 0-554-52358-2
University Press, 1972, P129 A history of Malaya, Joseph Kennedy, Macmillan, 1970, P138 A short history of Malaya, Gerald Percy Dartford, Longmans, Green