Twentieth Century Fund, Carskadon, T. R., & Soule, G. H. (1957). USA in new dimensions: The measure and promise of America's resources, a Twentieth Century Fund survey by Thomas R. Carskadon and George Soule ; graphics by Rudolf Modley. Macmillan.
Cita Chicago (17th ed.)Twentieth Century Fund, Thomas Reynolds Carskadon, i George Henry Soule. USA in New Dimensions: The Measure and Promise of America's Resources, a Twentieth Century Fund Survey by Thomas R. Carskadon and George Soule ; Graphics by Rudolf Modley. New York: Macmillan, 1957.
Cita MLA (9th ed.)Twentieth Century Fund, et al. USA in New Dimensions: The Measure and Promise of America's Resources, a Twentieth Century Fund Survey by Thomas R. Carskadon and George Soule ; Graphics by Rudolf Modley. Macmillan, 1957.