MLA

Ochoa Carrillo, Antonio, 1811-1883. Juárez, Benito. Autograph letter, signed: Mexico City, to Antonio Ochoa Carrillo. Box 1, folder 73. 1870 November 19. https://collections.library.yale.edu/catalog/32320211.

APA, 6th edition

Ochoa Carrillo, Antonio, 1811-1883. (["Box 1, folder 73"])(1870 November 19)[Juárez, Benito. Autograph letter, signed: Mexico City, to Antonio Ochoa Carrillo]. https://collections.library.yale.edu/catalog/32320211.