ebrahim, m. k. s. (1970). problems and policies for the world markets of primay commodities: The case of tobacco. the institute of national planning.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিebrahim, m. k. s. Problems and Policies for the World Markets of Primay Commodities: The Case of Tobacco. cairo: the institute of national planning, 1970.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিebrahim, m. k. s. Problems and Policies for the World Markets of Primay Commodities: The Case of Tobacco. the institute of national planning, 1970.