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