Brown, J.A.C. (James Alexander Campbell), 1911-1964, author
Watts & Co, 1946
Buku Teks
Gelder, Michael, author
Oxford University Press, 1983
Buku Teks
Arma Diani, author
Universitas Indonesia, 2012
UI - Tesis (Open)
Seedhouse, David
John Wiley & Sons, 2002
Buku Teks
Anderson, Edward William
Baillière Tindall & Cassell, 1979
Buku Teks