MLA
Webb, Alexander S. (Alexander Stewart), 1835-1911. An address delivered at Gettysburg, August 27, 1883. 1883. Regimental Histories. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/484mkkwmwt-cor.
APA, 6th edition
Webb, Alexander S. (Alexander Stewart), 1835-1911. (1883)[An address delivered at Gettysburg, August 27, 1883]. Regimental Histories, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/484mkkwmwt-cor.
Chicago
Webb, Alexander S. (Alexander Stewart), 1835-1911, An address delivered at Gettysburg, August 27, 1883, 1883, Regimental Histories, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/484mkkwmwt-cor.