Παραπομπή APA

Greenland D J, L. R. (1977). Soil conservation and management in the humid tropics. John Wiley & Sons.

Παραπομπή Chicago Style

Greenland D J, Lal R. Soil Conservation and Management in the Humid Tropics. Chichester: John Wiley & Sons, 1977.

Παραπομπή MLA

Greenland D J, Lal R. Soil Conservation and Management in the Humid Tropics. John Wiley & Sons, 1977.