MLA
Johnson, William D. (William Decker), 1842-1909. Lincoln University, or, The nation's first pledge of emancipation. 1867. African American Imprints Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7784j0zqf3-cor.
APA, 6th edition
Johnson, William D. (William Decker), 1842-1909. (1867)[Lincoln University, or, The nation's first pledge of emancipation]. African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7784j0zqf3-cor.
Chicago
Johnson, William D. (William Decker), 1842-1909, Lincoln University, or, The nation's first pledge of emancipation, 1867, African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7784j0zqf3-cor.