MLA

Taylor, Zachary, 1784-1850. Letter to the Cuartel General Ejercito de Ocupacion. 1847 May 4. https://collections.library.yale.edu/catalog/17437388.

APA, 6th edition

Taylor, Zachary, 1784-1850. (1847 May 4)[Letter to the Cuartel General Ejercito de Ocupacion]. https://collections.library.yale.edu/catalog/17437388.