Umit Hacioglu, Hasan Dinçer, editors
IGI Global, 2014
Buku Teks
Balaam, David N., 1950-, author
Pearson/Prentice Hall, 2005
Buku Teks
Bhagwati, Jagdish, author
MIT Press, c1991
Buku Teks
Balaam, David N., 1950-, author
Prentice-Hall, 1996
Buku Teks
edited by W. Ladd Hollist
Westview Press, 1985
Buku Teks