The arte of nauigation : conteynyng a compendious description of the sphere, with the makyng of certen instrumentes and rules for nauigations: and exemplified by manye demonstrations. Wrytten in the Spanyshe tongue by Martin Cortes, and directed to the emperour Charles the fyfte. Translated out of Spanyshe into Englyshe by Richard Eden. 1561. - Cortés, Martín, (In Powles Church yarde, by Richard Jugge, printer to the Quenes maiestie],, 1561)