The University of exeter for AmCAS, 1986
Buku Teks
Jabbar, Muhammad Abdul
University of Malaya Press, 1981
Buku Teks
Norwich, John Julius, editor
Oxford University Press, 1990
Buku Referensi
Korean Overseas Information Service, [date of publication not identified]
Buku Teks
Archipelago Press, 1998
Buku Teks