Turnbull, C. M. (Constance Mary), author
The Athlone Press, 1972
Buku Teks
National Archives of Malaysia, 2005
Buku Referensi
Vaughan, J. D.
Oxford University Press , 1985
Buku Teks
National Archives of Malaysia, 2005
Buku Referensi
National Archives of Malaysia, 2005
Buku Referensi