Hacker, L. M., & Zahler, H. S. (1947). The shaping of the American tradition. Columbia University Press.
Cita Chicago Style (17a ed.)Hacker, Louis Morton, y Helene Sara Zahler. The Shaping of the American Tradition. New York: Columbia University Press, 1947.
Cita MLA (9a ed.)Hacker, Louis Morton, y Helene Sara Zahler. The Shaping of the American Tradition. Columbia University Press, 1947.
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