American Philosophical Society. (1788). Philadelphia, 1788. At a meeting of the American Philosophical Society, on the 18th of April 1788: A letter was received from Mr. James Rumsey, of the state of Virginia, accompanied with a drawing and description of an improved boiler for a steam-engine, as also drawings and discriptions [sic] of 1. An improvement in Dr. Barkers' grist-mill. 2. An improvement in the saw-mill. 3. An improvement in raising water by means of a steam-engine. s.n.
Chicago Style (17th ed.) CitationAmerican Philosophical Society. Philadelphia, 1788. At a Meeting of the American Philosophical Society, on the 18th of April 1788: A Letter Was Received from Mr. James Rumsey, of the State of Virginia, Accompanied with a Drawing and Description of an Improved Boiler for a Steam-engine, as Also Drawings and Discriptions [sic] of 1. An Improvement in Dr. Barkers' Grist-mill. 2. An Improvement in the Saw-mill. 3. An Improvement in Raising Water by Means of a Steam-engine. S.l: s.n, 1788.
MLA (9th ed.) CitationAmerican Philosophical Society. Philadelphia, 1788. At a Meeting of the American Philosophical Society, on the 18th of April 1788: A Letter Was Received from Mr. James Rumsey, of the State of Virginia, Accompanied with a Drawing and Description of an Improved Boiler for a Steam-engine, as Also Drawings and Discriptions [sic] of 1. An Improvement in Dr. Barkers' Grist-mill. 2. An Improvement in the Saw-mill. 3. An Improvement in Raising Water by Means of a Steam-engine. s.n, 1788.