MLA

Ochoa Carrillo, Antonio, 1811-1883. Juárez, Benito. Secretarial autograph, signed letter, signed: Chihuahua, to Antonio Ochoa Carrillo. Box 1, folder 43. 1865 November 23. https://collections.library.yale.edu/catalog/32319910.

APA, 6th edition

Ochoa Carrillo, Antonio, 1811-1883. (["Box 1, folder 43"])(1865 November 23)[Juárez, Benito. Secretarial autograph, signed letter, signed: Chihuahua, to Antonio Ochoa Carrillo]. https://collections.library.yale.edu/catalog/32319910.