MLA
De Forest, B. S. (Bartholomew S.). Random sketches and wandering thoughts, or, What I saw in camp, on the march, the bivouac, the battle field and hospital, while with the Army in Virginia, North and South Carolina, during the late rebellion : with a historical sketch of the Second Oswego Regiment, Eighty-first New York State V.I., a record of all its officers, and roster of its enlisted men, also, an appendix. 1866. Regimental Histories. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/221tdz0dqh-cor.
APA, 6th edition
De Forest, B. S. (Bartholomew S.). (1866)[Random sketches and wandering thoughts, or, What I saw in camp, on the march, the bivouac, the battle field and hospital, while with the Army in Virginia, North and South Carolina, during the late rebellion : with a historical sketch of the Second Oswego Regiment, Eighty-first New York State V.I., a record of all its officers, and roster of its enlisted men, also, an appendix]. Regimental Histories, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/221tdz0dqh-cor.
Chicago
De Forest, B. S. (Bartholomew S.), Random sketches and wandering thoughts, or, What I saw in camp, on the march, the bivouac, the battle field and hospital, while with the Army in Virginia, North and South Carolina, during the late rebellion : with a historical sketch of the Second Oswego Regiment, Eighty-first New York State V.I., a record of all its officers, and roster of its enlisted men, also, an appendix, 1866, Regimental Histories, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/221tdz0dqh-cor.