MLA
Union Army - 9th Colored Infantry Regiment, Company B, Muster Roll, Captain Haskell M. Phelps, October 31 - December 31, 1864. 1864. Stuart A. Rose Manuscript, Archives, and Rare Book Library, OP11. https://digital.library.emory.edu/purl/4407wm38v4-cor.
APA, 6th edition
Union Army - 9th Colored Infantry Regiment, Company B, muster roll, Captain Haskell M. Phelps, October 31 - December 31, 1864 (OP11). (1864). [Muster rolls]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4407wm38v4-cor.
Chicago
“Union Army - 9th Colored Infantry Regiment, Company B, Muster Roll, Captain Haskell M. Phelps, October 31 - December 31, 1864.” Muster rolls. Civil War Collection, 1864. OP11. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4407wm38v4-cor.