. Cameo Bearing the Portrait of Charles I of Spain. Wheat Ridge, Colorado. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc51945/. Accessed August 27, 2014.
Note: Inconsistencies in capitalization and punctuation within the Digital Library may affect this citation. Before using this citation in formal writing, please consult your preferred style manual. More information.