VILLARD, H. H. (1963). Economic development. Holt, Rinehort and Winston.
Cita Chicago (17th ed.)VILLARD, Henry H. Economic Development. New York: Holt, Rinehort and Winston, 1963.
Cita MLA (9th ed.)VILLARD, Henry H. Economic Development. Holt, Rinehort and Winston, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.