Cite

Autograph letter signed, to La Pérouse, in French. 3 pages, 4to. Newport.

MLA

family, Rochambeau. Autograph Letter Signed, to La Pérouse, in French. 3 Pages, 4to. Newport. 1781. https://collections.library.yale.edu/catalog/2006729.

APA, 6th edition

family, R. (1781). Autograph letter signed, to La Pérouse, in French. 3 pages, 4to. Newport. https://collections.library.yale.edu/catalog/2006729.