Segons Pietro Razzano (1455), biógrafo de Vissén Ferrer, lo san predicáe en la seua llengua materna valensiana.
https://twitter.com/sheev100?lang=es
... et sua Valentina ac materna lingua fuerit ...
https://archive.org/search.php?query=Vicente%20Ferrer&and[]=mediatype%3A%22texts%22
http://www.traditio-op.org/santos/Vicente_Ferrer/Historia_de_San_Vicente_Ferrer,_Pbro_Jose_Sanchis_y_Sivera.pdf
http://worldcat.org/identities/lccn-n85202774
http://www.jewishencyclopedia.com/articles/6094-ferrer-vicente
https://www.eltestigofiel.org/index.php?idu=sn_1111