Breck, S. (1818). Sketch of the internal improvements already made by Pennsylvania: With observations upon her physical and fiscal means for their extension; particularly as they have reference to the future growth and prosperity of Philadelphia. J. Maxwell, Printer.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Breck, Samuel. Sketch of the Internal Improvements Already Made by Pennsylvania: With Observations upon Her Physical and Fiscal Means for Their Extension; Particularly as They Have Reference to the Future Growth and Prosperity of Philadelphia. Philadelphia: J. Maxwell, Printer, 1818.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Breck, Samuel. Sketch of the Internal Improvements Already Made by Pennsylvania: With Observations upon Her Physical and Fiscal Means for Their Extension; Particularly as They Have Reference to the Future Growth and Prosperity of Philadelphia. J. Maxwell, Printer, 1818.