edited by Allen N. Berger, Philip Molyneux and John O.S. Wilson
Oxford University Press, 2015
Buku Referensi
Charlesworth, Harold Karr, author
The New Nusantara, 1959
Buku Teks
Ranlett, John G., author
John Wiley & Sons, 1965
Buku Teks
Agus Pakpahan
BRI, 2004
Buku Teks
Sayers, R.S., author
Clarendon Press, 1958
Buku Teks