MLA

Ochoa Carrillo, Antonio, 1811-1883. Corona, Ramón. Autograph letter, signed: Durango, to Antonio Ochoa Carrillo. Box 1, folder 74. 1870 December 30. https://collections.library.yale.edu/catalog/32320217.

APA, 6th edition

Ochoa Carrillo, Antonio, 1811-1883. (["Box 1, folder 74"])(1870 December 30)[Corona, Ramón. Autograph letter, signed: Durango, to Antonio Ochoa Carrillo]. https://collections.library.yale.edu/catalog/32320217.