United Nations. Economic Commission for Europe, G. (1979). Labour supply and migration in Europe!: Demographic dimensions 1950-1975 and prospects. the author.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিUnited Nations. Economic Commission for Europe, Geneva. Labour Supply and Migration in Europe!: Demographic Dimensions 1950-1975 and Prospects. the author, 1979.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিUnited Nations. Economic Commission for Europe, Geneva. Labour Supply and Migration in Europe!: Demographic Dimensions 1950-1975 and Prospects. the author, 1979.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.