Groeneveldt, W. P. (Willem Pieter), 1841-1915, author
Bhratara, 1960
Buku Teks
Steiner, Stan, author
Delta book, 1968
Buku Teks
Robequain, Charles, 1897-1963, author
Longmans, 1959
Buku Teks
Jones, S. W, author
Ryal Institute of International Affairs, 1953
Buku Teks
Pye, Lucian W., 1921-2008, editor
Princeton University Press , 1956
Buku Teks