Não informado. (1926). Farming in South Africa. Union of South Africa, Department of Agriculture.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Farming in South Africa. Pretoria, Africa do Sul: Union of South Africa, Department of Agriculture, 1926.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Farming in South Africa. Union of South Africa, Department of Agriculture, 1926.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.