Não informado. (1959). Statistical indicators of short term economic changes in ECE countries. United Nations, Economic Commission for Europe.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Statistical Indicators of Short Term Economic Changes in ECE Countries. Geneva, Suíça: United Nations, Economic Commission for Europe, 1959.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Statistical Indicators of Short Term Economic Changes in ECE Countries. United Nations, Economic Commission for Europe, 1959.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.