Cita APA (7a ed.)

Gottschalk, L. R. (1969). Understanding history: A primer of historical method (Second Edition.). Alfred A. Knopf.

Cita Chicago Style (17a ed.)

Gottschalk, Louis Reichenthal. Understanding History: A Primer of Historical Method. Second Edition. New York: Alfred A. Knopf, 1969.

Cita MLA (9a ed.)

Gottschalk, Louis Reichenthal. Understanding History: A Primer of Historical Method. Second Edition. Alfred A. Knopf, 1969.