World Bank
Oxford University Press, 1982
Buku Teks
Yano, Seiya
The Institute of Developing Economics, 1969
Buku Teks
Myint, Hla, author
Hutchinson University Library, 1973
Buku Teks
Brown, Lester R., author
W.W.Norton, 1995
Buku Teks
United Nations , 1978
Buku Teks