APA (7th ed.) Zitazioa

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.

Chicago Style (17th ed.) Zitazioa

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.

MLA (9th ed.) Zitazioa

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.