Não informado. Studies in economics and political science. London School of Economics and Political Science.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Studies in Economics and Political Science. London: London School of Economics and Political Science.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Studies in Economics and Political Science. London School of Economics and Political Science.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.