edited by Shepherd Laughlin
The Institute of International Education, 2008
Buku Teks
Noland, Marcus, author
Institute for International economics , 1996
Buku Teks
Academic Press, 2015
eBooks
Kahan, Barbara, author
HMSO , 1994
Buku Teks
Drake, Charles D.
Sweet & Maxwell, 1972
Buku Teks