Schill, Stephan W., author
Cambridge University press, 2009
Buku Teks
edited by Karl P. Sauvant, Michael Chiswick-Patterson
Oxford University Press, 2008
Buku Teks
BRILL, 2012
Buku Teks
Sornarajah, M., author
Cambridge University Press, 1994
Buku Teks
edited by Peter Muchlinski, Federico Ortino and Christoph Schreuer
Oxford University Press, 2008
Buku Teks