MLA

Ochoa Carrillo, Antonio, 1811-1883. Juárez, Benito. Autograph letter, signed: Chihuahua, to Antonio Ochoa Carrillo. Box 1, folder 67. 1866 November 27. https://collections.library.yale.edu/catalog/32320174.

APA, 6th edition

Ochoa Carrillo, Antonio, 1811-1883. (["Box 1, folder 67"])(1866 November 27)[Juárez, Benito. Autograph letter, signed: Chihuahua, to Antonio Ochoa Carrillo]. https://collections.library.yale.edu/catalog/32320174.