el tigi, a. e. d. (1964). determining investment priority ratings. the institute of national planning.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিel tigi, aziz el din. Determining Investment Priority Ratings. cairo: the institute of national planning, 1964.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিel tigi, aziz el din. Determining Investment Priority Ratings. the institute of national planning, 1964.