Kolb, Robert
Oxford and Portland Oregon, 2013
Buku Teks
Kolb, Robert, author
Edward Elgar, 2014
Buku Teks
Devaney, James Gerard, author
Cambridge University Press, 2016
Buku Teks
Syatauw, J.J.G.
A.W.Sijthoff, 1969
Buku Teks
Eyffinger, Arthur
Kluwer Law International, 1995
Buku Referensi