United States. Bureau of Engraving and Printing & United States. Department of the Treasury. (1876). Specimens of engraving executed by the Bureau of Engraving and Printing. The Dept..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States. Bureau of Engraving and Printing و United States. Department of the Treasury. Specimens of Engraving Executed by the Bureau of Engraving and Printing. Washington: The Dept., 1876.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United States. Bureau of Engraving and Printing و United States. Department of the Treasury. Specimens of Engraving Executed by the Bureau of Engraving and Printing. The Dept., 1876.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.