APA
Wykstra R., . (1981). Manpower vs machinery: a case study of conservation works in lesotho. Washington-US: United States Agency for International Development.
Chicago
Wykstra R, . 1981. Manpower vs machinery: a case study of conservation works in lesotho. Washington-US: United States Agency for International Development.
Harvard
Wykstra R., . (1981). Manpower vs machinery: a case study of conservation works in lesotho. Washington-US: United States Agency for International Development.
MLA
Wykstra R, . Manpower vs machinery: a case study of conservation works in lesotho. Washington-US: United States Agency for International Development. 1981.