Não informado. (1980). Zimbabwe journal of agricultural research. Ministry of Lands, Agriculture and Rural Resettlement.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Zimbabwe Journal of Agricultural Research. Harare: Ministry of Lands, Agriculture and Rural Resettlement, 1980.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Zimbabwe Journal of Agricultural Research. Ministry of Lands, Agriculture and Rural Resettlement, 1980.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.