Marlowe, H., Neal, P., Rennie, M., & Wise, R. (2003). Ultimatum a la Tierra: = (The day the earth stood still). Madrid: Twentieth Century Fox.
Cita MLA (8 ed.) (Copiar al portapapeles)Marlowe, Hugh,, Patricia Neal, Michael Rennie, and Robert Wise. Ultimatum a La Tierra: = (The Day the Earth Stood Still). Madrid: Twentieth Century Fox , 2003.