Heussler, Robert
Heinemann Asia, 1985
Buku Teks
Brittain, Herbert, Sir
George Allen and Unwin, 1959
Buku Teks
Denning, Sir Alfred
Stevens and Sons Limited, 1949
Buku Teks
Glubb, John Bagot, Sir
Harper & Brothers, 1957
Buku Teks
Oakland, John
Routledge , 1992
Buku Teks