Fatima, Talat, author
Wolters Kluwer/ Law & Business, 2012
Buku Teks
Owen, Wilfred, author
The Brookings Institution, 1968
Buku Teks
Belgium : R.H. Wijffels, 1972
Buku Teks
Greaves, Rosa, author
Longman, 2000
Buku Teks
Lingat, Robert
University of California Press, 1973
Buku Teks