Emerson's vocal method for contralto, baritone and bass voices

Chicago citation style
Emerson, L. O. (Luther Orlando), 1820-1915. Emerson's vocal method for contralto, baritone and bass voices. c1890. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008695507. (Accessed November 13, 2018.)
APA citation style
Emerson, L. O. (Luther Orlando), 1820-1915, (c1890) Emerson's vocal method for contralto, baritone and bass voices. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008695507
MLA citation style
Emerson, L. O. (Luther Orlando), 1820-1915. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/008695507>.
Note: These citations are programmatically generated and may be incomplete.