Martha : an opera in four acts /Martha. Libretto. English

Chicago citation style
Flotow, Friedrich von, 1812-1883. Martha : an opera in four acts /,Martha. Libretto. English. 1867. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/006221206. (Accessed November 13, 2018.)
APA citation style
Flotow, Friedrich von, 1812-1883, (1867) Martha : an opera in four acts /,Martha. Libretto. English. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/006221206
MLA citation style
Flotow, Friedrich von, 1812-1883. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/006221206>.
Note: These citations are programmatically generated and may be incomplete.