Savi, Julio, author
Royal Falcon Books, 2012
Buku Teks
World Trade Organization
Cambridge University Press, 2012
Buku Teks
Kupperman, Joel
Oxford University Press , 2007
Buku Teks
Janaway, Christopher, author
Blackwell, 2005
Buku Teks
Reulet, Anibal Sanchez
University of Mexico Press, 1954
Buku Teks