Cochrane, Susan H., author
World Bank, 1983
Buku Teks
edited by Merwin M. Hargrove, Ike H. Harrison and Eugene L. Swearingen
Irwin, 1966
Buku Teks
The Brookings Institute, 1980
Buku Teks
Maria Teresa Tatto, editor
Sense, 2012
eBooks
Vito, Gennaro F., author
Buku Teks