Não informado. (1959). Monthly Statistics of Foreign Trade. Organization for Economic Co-Operation and Development, Department of Economic and Statistics.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Monthly Statistics of Foreign Trade. Paris: Organization for Economic Co-Operation and Development, Department of Economic and Statistics, 1959.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Monthly Statistics of Foreign Trade. Organization for Economic Co-Operation and Development, Department of Economic and Statistics, 1959.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.