Cite

312. D. S. Gibbs autograph letter signed

MLA

312. D. S. Gibbs Autograph Letter Signed. 1846. https://collections.library.yale.edu/catalog/33223941.

APA, 6th edition

312. D. S. Gibbs autograph letter signed. (1846). https://collections.library.yale.edu/catalog/33223941.