un economic & social council. (1966). A selected annotated bibliography of united nations publications and documents on general and methodology aspects of development planning. the institute of national planning.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)un economic & social council. A Selected Annotated Bibliography of United Nations Publications and Documents on General and Methodology Aspects of Development Planning. cairo: the institute of national planning, 1966.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)un economic & social council. A Selected Annotated Bibliography of United Nations Publications and Documents on General and Methodology Aspects of Development Planning. the institute of national planning, 1966.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.