Ballesta - Wikipedia
La Ballesta (The Crossbow. Medieval and Modern Military and Sporting. Its Construction, History and Management. With a Treatise on the Balista and Catapult of the Ancients). Skyhorse Publishing Inc. Alonso MARTINEZ DE ESPINAR (1644). Imprenta Real: Arte de Ballestería y Montería: Escrita con methodo pa escusar la fatiga que causa la ignorancia.