Oxford University Press, 2000
Buku Teks
edited by Margaret Carlyle
Oxford University Press, 1952
Buku Teks
Suranta Abd. Rahman, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2003
UI - Tesis (Membership)
Budd, Thomas A., author
Alexander Hamilton Institute, 1961
Buku Teks
Parker, R.H.
Penguin Books, 1972
Buku Teks