Cahn, Andreas, author
Cambridge University Press, 2018
eBooks
Pan, Guoping
Intercontinental Press, 2010
Buku Teks
[Edward Elgar, Universitas Indonesia], 2014
UI - Makalah dan Kertas Kerja
Mbanefo, Louis Nnamdi, author
Profesional Books Limited, 1983
Buku Teks
editor-in-Chief L. Crispin Warmington
Butterworth, 1950
Buku Teks