Enlaces:
[1] http://www.drna.gobierno.pr/biblioteca/publicaciones/hojas-de-nuestro-ambiente/Animales%20en%20Peligro%20-1BD225.pdf
[2] http://conserveonline.org/docs/2005/09/PuertoRicoTerrERAMay05.pdf
[3] http://www.coquipr.com/pla/sm.php
[4] http://ecos.fws.gov/speciesProfile/SpeciesReport.do?spcode=Q2JA
[5] http://ecos.fws.gov/docs/federal_register/fr1308.pdf
[6] http://www.natureserve.org/publications/disappearing_jewels.pdf
[7] http://grad.uprm.edu/tesis/matostorres.pdf
[8] http://www.fws.gov/caribbean-ecoteam/Espanol/especies_FS_ESP.pdf
[9] http://www.fws.gov/caribbean-ecoteam/Espanol/sapo_FS_ESP.pdf
[10] http://www.iucnredlist.org/details/54345
[11] http://www.fws.gov/caribbean-ecoteam/Espanol/plantas_revised_ESP.pdf
[12] http://www.fws.gov/caribbean-ecoteam/Espanol/animal_FS_ESP.PDF
[13] http://nagonline.net/Diets%20pdf/Puerto%20Rican%20Crested%20Toad%20Nutrition.pdf
[14] http://www.nagonline.net/Fact%20Sheet%20pdf/AZA%20-%20Puerto%20Rican%20Crested%20Toad%20Fact%20Sheet.pdf
[15] http://crestedtoadssp.org
[16] http://www.drna.gobierno.pr/biblioteca/publicaciones/tecnicas/PR-CWCS.pdf
[17] http://www.fws.gov/endangered/bulletin/99/05-06/08-09.pdf
[18] http://ecos.fws.gov/docs/recovery_plan/920807a.pdf
[19] http://www.sapoconcho.com
[20] http://academic.uprm.edu/publications/cjs/VOL15B/P033-040.PDF
[21] http://es.wikipedia.org/wiki/Stahlia
[22] http://www.centerforplantconservation.org/asp/CPC_ViewProfile.asp?CPCNum=4087
[23] http://fwie.fw.vt.edu/WWW/esis/lists/e204003.htm
[24] http://fwie.fw.vt.edu/WWW/esis/lists/e104006.htm
[25] http://www.globalamphibians.org/servlet/GAA
[26] http://www.coalicionventanasverraco.org/