Sweetman, J. (1971). Schweinfurt, disaster in the skies. Ballantine Books.
Cita Chicago Style (17a ed.)Sweetman, John. Schweinfurt, Disaster in the Skies. New York: Ballantine Books, 1971.
Cita MLA (9a ed.)Sweetman, John. Schweinfurt, Disaster in the Skies. Ballantine Books, 1971.
Precaución: Estas citas no son 100% exactas.