Jabbar, Muhammad Abdul
University of Malaya Press, 1981
Buku Teks
Norwich, John Julius, editor
Oxford University Press, 1990
Buku Referensi
edited by John Allen ; design: Roy Garwood ; photographs: Robert Walker
Paul Hamlyn, 1968
Buku Teks SO
Art Address Verlag Muller GMBH , 1982
Buku Referensi
Korean Overseas Information Service, [date of publication not identified]
Buku Teks SO