edited by Kevin Rafferty
World of Information, 1980
Buku Teks
The Government of Singapore, 1991
Buku Teks
oleh Soedjatmoko [and others]
Gramedia Pustaka Utama, 1991
Buku Teks
Bell, H. T. Montague, author
George Routledge & Sons, 1919
Buku Teks
Bell, H. T. Montague, author
George Routledge & Sons, 1916
Buku Teks