By the middle of 1946, Allied forces had occupied virtually all of Borneo and eastern Indonesia, but held only small enclaves on Java and Sumatra. Under pressure from the British, who did not want to fight in another colonial war, the two sides met in the hill town of Linggajati in West Java and in November 1946 reached an agreement that Indonesia would become an independent federal republic, consisting of the Republic of Indonesia on Java and Sumatra, together with two new federal states of Borneo and the ‘Great East' (Groote Oost, eastern Indonesia).
McMillan, Richard, The British Occupation of Indonesia, 1945-1946: Britain, the Netherlands and the Indonesian revolution. New York, NY : Routledge, 2005.
Mrazek, Rudolf, Sjahrir: Politics and Exile in Indonesia. Ithaca N.Y.: Cornell Southeast Asia Program, 1994.
Reid, Anthony J.S., Indonesian National Revolution, 1945-1950. Hawthorne: Longman Australia, 1974.