Não informado. (1872). Official Gazette of the United States Patent Office. U.S. Patent Office, Department of Congress.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Official Gazette of the United States Patent Office. Washington: U.S. Patent Office, Department of Congress, 1872.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Official Gazette of the United States Patent Office. U.S. Patent Office, Department of Congress, 1872.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.