zabelin, N. (1963). the methods of developing the balance of labour resources of a country for long range period: According to the U.S.S.R. National Planning Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)zabelin, N.N. The Methods of Developing the Balance of Labour Resources of a Country for Long Range Period: According to the U.S.S.R. cairo: National Planning Institute, 1963.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)zabelin, N.N. The Methods of Developing the Balance of Labour Resources of a Country for Long Range Period: According to the U.S.S.R. National Planning Institute, 1963.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.