Kelly, P. 1. (1803). The elements of book-keeping: Comprising a system of merchants accounts, founded on real business, and adapted to modern practice ; with an appendix on exchanges, including the recent alterations in France, Holland and Italy (From the 2nd London ed., augm. and improved.). Philadelphia: Printed and sold by James Humphreys.

Kelly, P. 1756-1842. The Elements of Book-keeping: Comprising a System of Merchants Accounts, Founded On Real Business, and Adapted to Modern Practice ; With an Appendix On Exchanges, Including the Recent Alterations in France, Holland and Italy. From the 2nd London ed., augm. and improved. Philadelphia: Printed and sold by James Humphreys, 1803.

Kelly, P. 1756-1842. The Elements of Book-keeping: Comprising a System of Merchants Accounts, Founded On Real Business, and Adapted to Modern Practice ; With an Appendix On Exchanges, Including the Recent Alterations in France, Holland and Italy. From the 2nd London ed., augm. and improved. Philadelphia: Printed and sold by James Humphreys, 1803.