Não informado. (1980). Zimbabwe journal of agricultural research. Ministry of Lands, Agriculture and Rural Resettlement.
Chicago-referens (17:e uppl.)Não informado. Zimbabwe Journal of Agricultural Research. Harare: Ministry of Lands, Agriculture and Rural Resettlement, 1980.
MLA-referens (8:e uppl.)Não informado. Zimbabwe Journal of Agricultural Research. Ministry of Lands, Agriculture and Rural Resettlement, 1980.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.