wunderlich, w. (2018). price planning in socialism (bases and possibilities - its preparation, implementation and organization at the case of the german democratic). the institute of national planning.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)wunderlich, werner. Price Planning in Socialism (bases and Possibilities - Its Preparation, Implementation and Organization at the Case of the German Democratic). the institute of national planning, 2018.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)wunderlich, werner. Price Planning in Socialism (bases and Possibilities - Its Preparation, Implementation and Organization at the Case of the German Democratic). the institute of national planning, 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.