MLA
Burleigh, H. T. (Harry Thacker), 1866-1949. "O Perfect Love" words by D. F. Blomfield and music by H. T. Burleigh. 1904. H.T. Burleigh Collection, 1903-1972. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7719kd51sq-cor.
APA, 6th edition
Burleigh, H. T. (Harry Thacker), 1866-1949. (1904)["O Perfect Love" words by D. F. Blomfield and music by H. T. Burleigh]. H.T. Burleigh Collection, 1903-1972, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7719kd51sq-cor.
Chicago
Burleigh, H. T. (Harry Thacker), 1866-1949, "O Perfect Love" words by D. F. Blomfield and music by H. T. Burleigh, 1904, H.T. Burleigh Collection, 1903-1972, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7719kd51sq-cor.