MLA
Confederate States of America; Laws, Statutes, Etc - An Act to Encourage the Manufacture of Saltpetre and Small Arms. 1862. Stuart A. Rose Manuscript, Archives, and Rare Book Library, OP1, Folder 3. https://digital.library.emory.edu/purl/071ngf1wsd-cor.
APA, 6th edition
Confederate States of America; laws, statutes, etc - An act to encourage the manufacture of saltpetre and small arms (OP1, Folder 3). (1862). [Laws (documents)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/071ngf1wsd-cor.
Chicago
“Confederate States of America; Laws, Statutes, Etc - An Act to Encourage the Manufacture of Saltpetre and Small Arms.” Laws (documents). Civil War Collection, 1862. OP1, Folder 3. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/071ngf1wsd-cor.