Organisation for Economic Co-operation and Development. (2013). Denmark 2013: Combined phase 1 + phase 2, incorporating phase 2 ratings. OECD Publishing.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Organisation for Economic Co-operation and Development. Denmark 2013: Combined Phase 1 + Phase 2, Incorporating Phase 2 Ratings. Paris: OECD Publishing, 2013.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Organisation for Economic Co-operation and Development. Denmark 2013: Combined Phase 1 + Phase 2, Incorporating Phase 2 Ratings. OECD Publishing, 2013.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.