Cita APA (7th ed.)

Hofstadter, R. (1968). The progressive historians: Turner, Beard, Parrington. Knopf.

Cita Chicago (17th ed.)

Hofstadter, Richard. The Progressive Historians: Turner, Beard, Parrington. New York: Knopf, 1968.

Cita MLA (9th ed.)

Hofstadter, Richard. The Progressive Historians: Turner, Beard, Parrington. Knopf, 1968.