Citazione Stile APA (7a Edizione)

GREENLAND, D. (1977). Soil conservation and management in the: Humid tropics : proceedings of the International conference on soil conservation and management in the humid tropics held in Ibadan, Nigeria, in June 1975. John Wiley.

Citazione stile Chigago Style (17a edizione)

GREENLAND, D.J. Soil Conservation and Management in the: Humid Tropics : Proceedings of the International Conference on Soil Conservation and Management in the Humid Tropics Held in Ibadan, Nigeria, in June 1975. New York: John Wiley, 1977.

Citatione MLA (9a ed.)

GREENLAND, D.J. Soil Conservation and Management in the: Humid Tropics : Proceedings of the International Conference on Soil Conservation and Management in the Humid Tropics Held in Ibadan, Nigeria, in June 1975. John Wiley, 1977.