MLA
Howard, Wiley C. Sketch of Cobb Legion Cavalry and Some Incidents and Scenes Remembered. [publisher not identified], 1901. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/494vhhmm7b-cor.
APA, 6th edition
Howard, W. C. (1901). Sketch of Cobb Legion Cavalry and some incidents and scenes remembered [Regimental histories.]. [publisher not identified]; Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/494vhhmm7b-cor.
Chicago
Howard, Wiley C. “Sketch of Cobb Legion Cavalry and Some Incidents and Scenes Remembered.” Regimental histories. Regimental Histories. [Georgia?]: [publisher not identified], 1901. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/494vhhmm7b-cor.