APA (7th ed.) Citation

Unknown. (2012). Portrait of Sir James Clarke Ross, 1800-1892. University of Southern California Digital Library (USC.DL).

Chicago Style (17th ed.) Citation

Unknown. Portrait of Sir James Clarke Ross, 1800-1892. University of Southern California Digital Library (USC.DL), 2012.

MLA (9th ed.) Citation

Unknown. Portrait of Sir James Clarke Ross, 1800-1892. University of Southern California Digital Library (USC.DL), 2012.

Warning: These citations may not always be 100% accurate.