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.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)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.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)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.
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