MLA
A True Copy of the Original of the Ordinance of Secession for the State of Louisiana, Declaring That It Had Seceded from the United States on January 26, 1861. 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, OP34, Folder 1. https://digital.library.emory.edu/purl/0278sf7n85-cor.
APA, 6th edition
A true copy of the original of the Ordinance of secession for the state of Louisiana, declaring that it had seceded from the United States on January 26, 1861 (OP34, Folder 1). (1861). [Resolutions (administrative records)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0278sf7n85-cor.
Chicago
“A True Copy of the Original of the Ordinance of Secession for the State of Louisiana, Declaring That It Had Seceded from the United States on January 26, 1861.” Resolutions (administrative records). Civil War Collection, 1861. OP34, Folder 1. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0278sf7n85-cor.