Citazione Stile APA (7a Edizione)

Kool, R. (1960). Tropical agriculture and economic development. H. Veenmen & Zonen N.V.

Citazione stile Chigago Style (17a edizione)

Kool, Rudolf. Tropical Agriculture and Economic Development. Wageningen, [The Netherlands]: H. Veenmen & Zonen N.V, 1960.

Citatione MLA (9a ed.)

Kool, Rudolf. Tropical Agriculture and Economic Development. H. Veenmen & Zonen N.V, 1960.