International encyclopedia of the social sciences : bibliographical supplement, volume 18
David L. Sills, editor
The Free Press; Coolier Macmillan Publisher, 1979
 Buku Referensi
Grabar, V.E., author
The history of international law in Russia, 1647-1917: a bio-bibliographical study
Clarendon Press, 1990
 Buku Referensi
Contemporary authors bibliographical series; Volume 2, American poets
edited by Ronald Baughman
Gale Reserach , 1986
 Buku Referensi
Williamson, J.A.
The British Empire and Common Wealth
Macmillan, 1965
 Buku Teks
Parkinson, C. Northcote (Cyril Northcote), 1909-1993, author
British intervention in Malaya 1867-1877
University of Malaya Press, 1964
 Buku Teks