John Frederick Peto at age 25 in a music lesson

Chicago citation style
George & William H. Rau (Philadelphia, Pa.). John Frederick Peto at age 25 in a music lesson. 1878 Jan. 30. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3AAAADCD_item_6784&repo=DPLA. (Accessed December 13, 2018.)
APA citation style
George & William H. Rau (Philadelphia, Pa.), (1878 Jan. 30) John Frederick Peto at age 25 in a music lesson. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3AAAADCD_item_6784&repo=DPLA
MLA citation style
George & William H. Rau (Philadelphia, Pa.). Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3AAAADCD_item_6784&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.