1. De contagione et contagiosis morbis et eorum curatione. Wright W, translator;G Fracastoro,1546
2. Sumario de la natural historia de las Indias;G Fernandez de Oviedo y Valdes,1526
3. Treatise on the serpentine malady, which in Spain is commonly called bubas, which was drawn up in the hospital of All Saints in Lisbon;R Diaz de Isla,1539
4. The history of syphilis;C Quetel,1990
5. Apologetica Historica;B Las Casas,1530