Stout, Hiram Miller, author
Oxford University Press, 1953
Buku Teks
Punnett, R.M., author
Dartmouth, 1994
Buku Teks
Government Of The Republic Of Indonesia, 1964
Buku Klasik
Emden, Cecil S.
At The Clarendon Press, 1956
Buku Teks
Belshaw, Cyril S., author
Royal Institute of International Affairs, 1950
Buku Teks