APA (7th ed.) Citation

Gottschalk, L. R. (1950). Understanding history: A primer of historical method ([1st ed.].). Knopf.

Chicago Style (17th ed.) Citation

Gottschalk, Louis Reichenthal. Understanding History: A Primer of Historical Method. [1st ed.]. New York: Knopf, 1950.

MLA (9th ed.) Citation

Gottschalk, Louis Reichenthal. Understanding History: A Primer of Historical Method. [1st ed.]. Knopf, 1950.