MLA
Newton, John, 1725-1807. Olney hymns : in three books .... 1779. Stuart A. Rose Manuscripts, Archives, and Rare Books Library Digitized Books Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/880ht76hx2-cor.
APA, 6th edition
Newton, John, 1725-1807. (1779)[Olney hymns : in three books ...]. Stuart A. Rose Manuscripts, Archives, and Rare Books Library Digitized Books Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/880ht76hx2-cor.
Chicago
Newton, John, 1725-1807, Olney hymns : in three books ..., 1779, Stuart A. Rose Manuscripts, Archives, and Rare Books Library Digitized Books Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/880ht76hx2-cor.