APA (7th ed.) Citation

Gottschalk, L. (1969). Understanding history: A primer of historical method (2nd ed.). Knopf.

Chicago Style (17th ed.) Citation

Gottschalk, Louis. Understanding History: A Primer of Historical Method. 2nd ed. New York: Knopf, 1969.

MLA (9th ed.) Citation

Gottschalk, Louis. Understanding History: A Primer of Historical Method. 2nd ed. Knopf, 1969.

Warning: These citations may not always be 100% accurate.