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 M., i Helene Sara Zahler. The Shaping of the American Tradition. New York: Columbia university press, 1947.

Cita MLA (8th ed.)

Hacker, Louis M., i Helene Sara Zahler. The Shaping of the American Tradition. Columbia university press, 1947.