National Gallery of Art (U.S.). Report and studies in the history of art. National Gallery of Art : United States Government Printing Office.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Gallery of Art (U.S.). Report and Studies in the History of Art. Washington: National Gallery of Art : United States Government Printing Office.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Gallery of Art (U.S.). Report and Studies in the History of Art. National Gallery of Art : United States Government Printing Office.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.