MLA
McTyeire, Holland Nimmons, 1824-1889. Letter from Holland McTyeire (New Orleans, Louisiana) to Robert Paine - August 14, 1857. August 14, 1857. Robert Paine Papers, 1828-1882. Pitts Theology Library. https://digital.library.emory.edu/purl/781jh9w215-cor.
APA, 6th edition
McTyeire, Holland Nimmons, 1824-1889. (August 14, 1857)[Letter from Holland McTyeire (New Orleans, Louisiana) to Robert Paine - August 14, 1857]. Robert Paine Papers, 1828-1882, Pitts Theology Library. https://digital.library.emory.edu/purl/781jh9w215-cor.
Chicago
McTyeire, Holland Nimmons, 1824-1889, Letter from Holland McTyeire (New Orleans, Louisiana) to Robert Paine - August 14, 1857, August 14, 1857, Robert Paine Papers, 1828-1882, Pitts Theology Library. https://digital.library.emory.edu/purl/781jh9w215-cor.