Não informado. Handbook of International Trade Development Statistics. United Nations Conference on Trade and Development.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Handbook of International Trade Development Statistics. Geneva, Suíça: United Nations Conference on Trade and Development.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Handbook of International Trade Development Statistics. United Nations Conference on Trade and Development.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.