At last = L'incontro : romance for contralto or baritone /

Chicago citation style
Ball, S. B. (Stephen B.), -1881. At last = L'incontro : romance for contralto or baritone /. c1860. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/101761381. (Accessed December 13, 2018.)
APA citation style
Ball, S. B. (Stephen B.), -1881, (c1860) At last = L'incontro : romance for contralto or baritone /. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/101761381
MLA citation style
Ball, S. B. (Stephen B.), -1881. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/101761381>.
Note: These citations are programmatically generated and may be incomplete.