DeQuille,Dan;Twain,Mark(July 1893).„Reporting With Mark Twain”.The Californian Illustrated Magazine.Arhiviranoiz originalana datum 2012-01-19.Pristupljeno 2015-06-16.
DeQuille,Dan;Twain,Mark(July 1893).„Reporting With Mark Twain”.The Californian Illustrated Magazine.Arhiviranoiz originalana datum 2012-01-19.Pristupljeno 2015-06-16.