Páginas electrónicas [http://www.archive.org/search.php?query=creator%3A%22Valladares%20y%20Saavedra%2C%20Ram%C3%B3n%20de%2C%201824-1901%22%20AND%20(collection%3A%22spandr%22%20AND%20((collection%3Aamericana%20AND%20format%3Apdf%20AND%20mediatype%3Atexts)%20AND%20-mediatype%3Acollection%20AND%20firstTitle%3AD)], [http://es.wikisource.org/wiki/Manual_de_Biograf%C3%ADa:_Ram%C3%B3n_Valladares_y_Saavedra]; sítio electrónico da Biblioteca Nacional de Espanha [http://elbuscon.bne.es]