editor Andi Hamzah
Galia Indonesia, 1987
Buku Teks
Baker & McKenzie, 1990
Buku Teks
Minstry Foreign Affairs, [date of publication not identified]
Buku Teks
Arpornsuwan, Thanet, author
Friedrich-Ebert Stiftung , 1978
Buku Teks
edited by Theodore Panayotou
Agricultural Development Council, 1985
Buku Teks