An elementary treatise on arithmetic, in theory and practice:
adapted to the instruction of youth in schools and academies in the United States.
By James Ryan.

APA Citation

Ryan, J. (1827). An elementary treatise on arithmetic, in theory and practice: adapted to the instruction of youth in schools and academies in the United States. New-York: Collins & Hannay.

MLA Citation

Ryan, James. An Elementary Treatise On Arithmetic, In Theory And Practice: Adapted to the Instruction of Youth In Schools And Academies In the United States. New-York: Collins & Hannay, 1827.

Warning: These citations may not always be complete (especially for serials).