Die beiden freunde; oder, Zweifel und ueberzeugung:

Chicago citation style
Kennedy, Grace, 1782-1825. Die beiden freunde; oder, Zweifel und ueberzeugung:. 1831. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008405324. (Accessed December 15, 2018.)
APA citation style
Kennedy, Grace, 1782-1825, (1831) Die beiden freunde; oder, Zweifel und ueberzeugung:. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008405324
MLA citation style
Kennedy, Grace, 1782-1825. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/008405324>.
Note: These citations are programmatically generated and may be incomplete.