The ready reckoner, or, Traders most useful assistant :
in buying and selling all sorts of commodities either wholesale or retail ... /
by Daniel Fenning.
APA Citation
Fenning, D. (1803). The ready reckoner, or, Traders most useful assistant: in buying and selling all sorts of commodities either wholesale or retail .... New York: Printed for T.B. Jansen by Lewis Nichols.
MLA Citation
Fenning, Daniel. The Ready Reckoner, Or, Traders Most Useful Assistant: In Buying And Selling All Sorts of Commodities Either Wholesale Or Retail .... New York: Printed for T.B. Jansen by Lewis Nichols, 1803.
Warning: These citations may not always be complete (especially for serials).