Forlong, James G., author
The Royal Asiatic Society, 1940
Buku Referensi
Belshaw, Cyril S., author
Royal Institute of International Affairs, 1950
Buku Teks
Thurnwald, Richard C
Human Relations Area Files Press, 1970
Buku Teks
Bernadetha Indreswari Wisnuputri, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
UI - Tugas Akhir
Crawfurd, John, author
Oxford University Press, 1971
Buku Referensi