1. Ahmad Adam, (2009). Letters of sincerity: The Raffles Collection of Malay Letters (1780-1824) A descriptive account with notes and translation, MBRAS Monograph 43 (Bandar Puchong Jaya: MBRAS, 2009).
2. Anderson, John, Political and Commercial Considerations Relative to the Malayan Peninsula and the British Settlements in the Straits of Malacca, 8 JIAEA (1854). 134-157, 266-284, 365-372; 1.
3. JIAEA, (1856). NS 299-315; 35 JMBRAS (1962) Part IV; Introduction by John Bastin 1-10.
4. Bassett, D.K. (1961). The british country trade and sea captain in South East Asia in the seventeenth and eighteenth century, Journal of the Historical Society University of Malaya, 1, (2:9-14).
5. Bassett, D.K. (1964). British commercial and strategic interest in the malay peninsula during the late eighteenth century, in Bastin, J. and Roolvink, R (eds) Malayan and Indonesian Studies: Essays Presented to Sir Richard Windstedt on His Eighty-fifth Birthday (London: Oxford University Press), 122-140.