Referência DARWIN, Charles. JOURNAL OF RESEARCHES INTO THE NATURAL HISTORY AND GEOLOGY OF THE COUNTRIES VISITED DURING THE VOYAGE OF H.M.S. BEAGLE ROUND THE WORLD, UNDER THE COMMAND OF CAP. FITZ ROY, R.N. BY CHARLES DARWIN, M.S., F.R.S. SECOND EDITION, CORRECTED, WITH ADDITIONS.. Londres, Inglaterra: [s.n.], 1845.