Cita APA (7a ed.)

Hacker, L. M., & Zahler, H. S. (1947). The shaping of the American tradition (2nd printing.). Columbia University Press.

Cita Chicago Style (17a ed.)

Hacker, Louis M., y Helene Sara Zahler. The Shaping of the American Tradition. 2nd printing. New York: Columbia University Press, 1947.

Cita MLA (9a ed.)

Hacker, Louis M., y Helene Sara Zahler. The Shaping of the American Tradition. 2nd printing. Columbia University Press, 1947.