Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Hacker, Louis Morton, i Helene Sara Zahler. The Shaping of the American Tradition. New York: Columbia University Press, 1947.

Cita MLA (9th ed.)

Hacker, Louis Morton, i Helene Sara Zahler. The Shaping of the American Tradition. Columbia University Press, 1947.