Chang, Richard T., author
University of Florida Press, 1970
Buku Teks
Watt, William Montgomery, author
Oxford University Press, 1961
Buku Teks
Geyl, Pieter, 1887-1966, author
The World Publishing, 1971
Buku Teks
National Archives of Singapore, National Heritage Board, 1998
Buku Referensi
Tarling, Nicholas, author
New Zealand Asia Institute , 2000
Buku Teks