[Letter: Toribio de Montes to Andrew Ross]
MLA
Montes, Toribio de. [Letter: Toribio De Montes to Andrew Ross]. 1808. https://collections.library.yale.edu/catalog/10729020.
APA, 6th edition
Montes, T. de. (1808). [Letter: Toribio de Montes to Andrew Ross] [Autographs, letters (correspondence) (AAT)]. https://collections.library.yale.edu/catalog/10729020.