Avramovic, Dragoslav, author
John Hopkins Press, 1972
Buku Teks
International Bank for Reconstruction and Development ; editor, Francis Adams Truslow
John Hopkins Press, 1953
Buku Teks
International Bank for Reconstruction and Development , 1973
Buku Teks
Johns Hopkins University Press , 1974
Buku Teks
Gibson, William M., author
Duke University Press, 1948
Buku Teks