Kool, R. (1960). Tropical agriculture and economic development. H. Veenmen & Zonen N.V.
Cita Chicago Style (17a ed.)Kool, Rudolf. Tropical Agriculture and Economic Development. Wageningen, [The Netherlands]: H. Veenmen & Zonen N.V, 1960.
Cita MLA (9a ed.)Kool, Rudolf. Tropical Agriculture and Economic Development. H. Veenmen & Zonen N.V, 1960.
Precaución: Estas citas no son 100% exactas.