MLA
Affidavit of Mary Ann McEachin, Widow of John Thomas McEachin, Company H of the 20th Georgia Infantry Regiment. 1863. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 6, Folder 49. https://digital.library.emory.edu/purl/945cc2frnx-cor.
APA, 6th edition
Affidavit of Mary Ann McEachin, widow of John Thomas McEachin, Company H of the 20th Georgia Infantry Regiment (Box 6, Folder 49). (1863). [Affidavits]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/945cc2frnx-cor.
Chicago
“Affidavit of Mary Ann McEachin, Widow of John Thomas McEachin, Company H of the 20th Georgia Infantry Regiment.” Affidavits. Civil War Collection, 1863. Box 6, Folder 49. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/945cc2frnx-cor.