Poinsett, J. R. (1841). Discourse, on the objects and importance of the National Institution for the promotion of science: Established at Washington, 1840, delivered at the first anniversary. P. Force, Printer.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Poinsett, Joel Roberts. Discourse, on the Objects and Importance of the National Institution for the Promotion of Science: Established at Washington, 1840, Delivered at the First Anniversary. Washington: P. Force, Printer, 1841.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Poinsett, Joel Roberts. Discourse, on the Objects and Importance of the National Institution for the Promotion of Science: Established at Washington, 1840, Delivered at the First Anniversary. P. Force, Printer, 1841.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.