Cita APA (7a ed.)

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.