Jenkins, J. (1813). The art of writing reduced to a plain and easy system: On a plan entirely new, in seven books (Rev., enl. & improved.). Printed for the author printed by Flagg & Gould.

Jenkins, John. The Art of Writing Reduced to a Plain and Easy System: On a Plan Entirely New, in Seven Books. Rev., enl. & improved. Cambridge, [Andover: Printed for the author printed by Flagg & Gould, 1813.

Jenkins, John. The Art of Writing Reduced to a Plain and Easy System: On a Plan Entirely New, in Seven Books. Rev., enl. & improved. Printed for the author printed by Flagg & Gould, 1813.