@Book{BCLMB20220000307, title = "In presenti instrumento continetur quaedam extravagans nuper edita a ... Alexandro Sexto ... aprobante bullam de Conceptione Virginis a ... Sixto papa quarto edditam.", author = "Alejandro VI Papa, 1431-1503", publisher = "Vallisoleti : [Diego de Gumiel]", editor = "[Diego de Gumiel]", URL = "https://patrimoniodigital.castillalamancha.es/es/consulta/registro.do?id=67331", year = "1503", }