MLA
United States Army - Fourth Regiment of Artillery. Company A. Muster Roll and Pay Roll - June 30, 1858. 1858. Stuart A. Rose Manuscript, Archives, and Rare Book Library, OP29. https://digital.library.emory.edu/purl/99351c5c7n-cor.
APA, 6th edition
United States Army - Fourth Regiment of Artillery. Company A. muster roll and pay roll - June 30, 1858 (OP29). (1858). [Muster rolls]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/99351c5c7n-cor.
Chicago
“United States Army - Fourth Regiment of Artillery. Company A. Muster Roll and Pay Roll - June 30, 1858.” Muster rolls. Civil War Collection, 1858. OP29. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/99351c5c7n-cor.