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Majalah, Jurnal, Buletin
National Archives of Singapore, National Heritage Board, 1998
Buku Referensi
Barnard, Alan, author
Cambridge University Press, 2000
Buku Teks
Sabine, George H., author
George G. Harrap, 1952
Buku Teks
Sabine, George H., author
Dryden, 1973
Buku Teks