John Greenleaf Whittier; a biography

Chicago citation style
Underwood, Francis Henry, 1825-1894. John Greenleaf Whittier; a biography. 1900. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/009185319. (Accessed December 15, 2018.)
APA citation style
Underwood, Francis Henry, 1825-1894, (1900) John Greenleaf Whittier; a biography. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/009185319
MLA citation style
Underwood, Francis Henry, 1825-1894. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/009185319>.
Note: These citations are programmatically generated and may be incomplete.