APA
Hodgood H., . (1981). Central america: small-farmer cropping systems. Washington-US: United States Agency for International Development.
Chicago
Hodgood H.H, . 1981. Central america: small-farmer cropping systems. Washington-US: United States Agency for International Development.
Harvard
Hodgood H., . (1981). Central america: small-farmer cropping systems. Washington-US: United States Agency for International Development.
MLA
Hodgood H.H, . Central america: small-farmer cropping systems. Washington-US: United States Agency for International Development. 1981.