The genera of North American plants :
and a catalogue of the species, to the year 1817/
by Thomas Nuttall.
APA Citation
Nuttall, T., Thordarson Collection. (1818). The genera of North American plants: and a catalogue of the species, to the year 1817. Philadelphia: Printed for the author by D. Heartt.
MLA Citation
Nuttall, Thomas, 1786-1859, and Thordarson Collection. The Genera of North American Plants: And a Catalogue of the Species, to the Year 1817. Philadelphia: Printed for the author by D. Heartt, 1818.
Warning: These citations may not always be complete (especially for serials).