edited by Robert Z. Aliber
Macmillan, 1977
Buku Teks
Bhagwati, Jagdish, author
MIT Press, c1991
Buku Teks
Archibald, W. Peter (William Peter), 1943-, author
McGraw-Hill Ryerson, 1978
Buku Teks
Stanford University Press, 1988
Buku Teks
Balaam, David N., 1950-, author
Prentice-Hall, 1996
Buku Teks