Further reading:
Cheah, B. K. 2001. Early Modern History 1800–1940. The Encyclopedia of Malaysia, Vol. 7. Singapore: Archipelago Press.
Heussler, R. 1981. British Rule in Malaya, The Malayan Civil Service and Its Predecessors, 1867–1942. Oxford: Clio Press.
Jackson, J. C. 1968. Sarawak: A Geographical Survey of a Developing State. London: University of London Press.
Purcell, V. 1967. Malaysia. New York: Walker and Company.
Sultan Nazrin Shah. 2017. Charting the Economy: Early 20th Century Malaya and Contemporary Malaysian Contrasts. Kuala Lumpur: Oxford University Press
Thio, E. 1969. British Policy in the Malay Peninsula, 1880–1910: Volume I, the Southern and Central States. Kuala Lumpur: University of Malaya Press.