APA Citation
Felter, S. A. (1868). The first lessons in numbers. Scribner, Armstrong, and Co. Retrieved from https://library.si.edu/digital-library/book/firstlessonsnum00felt
MLA Citation
Felter, S. A. The first lessons in numbers. Scribner, Armstrong, and Co, 1868, https://library.si.edu/digital-library/book/firstlessonsnum00felt
Chicago
Felter, S. A. The first lessons in numbers. Scribner, Armstrong, and Co, 1868. https://library.si.edu/digital-library/book/firstlessonsnum00felt
Warning: These citations may not always be complete (especially for serials).