MLA
Kavanaugh, H. H. (Hubbard Hinde), 1802-1884. Letter from H. H. Kavanaugh (Versaille, Kentucky) to Robert Paine (Aberdeen, Mississippi) - June 22, 1860. June 22, 1860. Robert Paine Papers, 1828-1882. Pitts Theology Library. https://digital.library.emory.edu/purl/6451g1jz19-cor.
APA, 6th edition
Kavanaugh, H. H. (Hubbard Hinde), 1802-1884. (June 22, 1860)[Letter from H. H. Kavanaugh (Versaille, Kentucky) to Robert Paine (Aberdeen, Mississippi) - June 22, 1860]. Robert Paine Papers, 1828-1882, Pitts Theology Library. https://digital.library.emory.edu/purl/6451g1jz19-cor.
Chicago
Kavanaugh, H. H. (Hubbard Hinde), 1802-1884, Letter from H. H. Kavanaugh (Versaille, Kentucky) to Robert Paine (Aberdeen, Mississippi) - June 22, 1860, June 22, 1860, Robert Paine Papers, 1828-1882, Pitts Theology Library. https://digital.library.emory.edu/purl/6451g1jz19-cor.