APA

Greenland D. J., . (1981). Characterization of soils in relation to their classification and management for crop production: examples from some areas of the humid tropics. New York: Oxford University.

Chicago

Greenland D J, . 1981. Characterization of soils in relation to their classification and management for crop production: examples from some areas of the humid tropics. New York: Oxford University.

Harvard

Greenland D. J., . (1981). Characterization of soils in relation to their classification and management for crop production: examples from some areas of the humid tropics. New York: Oxford University.

MLA

Greenland D J, . Characterization of soils in relation to their classification and management for crop production: examples from some areas of the humid tropics. New York: Oxford University. 1981.