Cita APA (7a ed.)

Gottschalk, L. R. (1960). Understanding history: A primer of historical method. Knopf.

Cita Chicago Style (17a ed.)

Gottschalk, Louis Reichenthal. Understanding History: A Primer of Historical Method. New York: Knopf, 1960.

Cita MLA (9a ed.)

Gottschalk, Louis Reichenthal. Understanding History: A Primer of Historical Method. Knopf, 1960.