[Musical score] [c. 1730] Triosonata No. 3 in D Minor / Johann Sebastian Bach.

Chicago citation style
Bach, Johann Sebastian, 1685-1750. [Musical score] [c. 1730] Triosonata No. 3 in D Minor / Johann Sebastian Bach.. 1730. Retrieved from the Digital Public Library of America, http://cdm.lib.lehigh.edu/cdm/ref/collection/letters/id/1423. (Accessed December 11, 2018.)
APA citation style
Bach, Johann Sebastian, 1685-1750, (1730) [Musical score] [c. 1730] Triosonata No. 3 in D Minor / Johann Sebastian Bach.. Retrieved from the Digital Public Library of America, http://cdm.lib.lehigh.edu/cdm/ref/collection/letters/id/1423
MLA citation style
Bach, Johann Sebastian, 1685-1750. Retrieved from the Digital Public Library of America <http://cdm.lib.lehigh.edu/cdm/ref/collection/letters/id/1423>.
Note: These citations are programmatically generated and may be incomplete.