APA
Greenland D J Ed, International conference on soil conservation and management in the humid tropics (1978 : Ibadan) & Lal R Ed. (1977). Proceeding on soil conservation and management in the humid tropics. Chichester: John Wiley.
Chicago
Greenland D J Ed, International conference on soil conservation and management in the humid tropics (1978 : Ibadan) and Lal R Ed. 1977. Proceeding on soil conservation and management in the humid tropics. Chichester: John Wiley.
Harvard
Greenland D J Ed, International conference on soil conservation and management in the humid tropics (1978 : Ibadan) and Lal R Ed. (1977). Proceeding on soil conservation and management in the humid tropics. Chichester: John Wiley.
MLA
Greenland D J Ed, International conference on soil conservation and management in the humid tropics (1978 : Ibadan) and Lal R Ed. Proceeding on soil conservation and management in the humid tropics. Chichester: John Wiley. 1977.
