Castro, Américo, 1885-1972. Iberoamérica, : su presente y su pasado, [electronic resource] / by Américo Castro .... — New York, : Dryden Press, [c1941]. — xiv p., 1 l., 267 p. : front., illus., plates, facsim. 21 cm. — (The Dryden press. Modern language publications).