APA (7th ed.) Citation

Eckardt, H. v. (1949). Ivan the Terrible ([1st American ed.].). Knopf.

Chicago Style (17th ed.) Citation

Eckardt, Hans von. Ivan the Terrible. [1st American ed.]. New York: Knopf, 1949.

MLA (9th ed.) Citation

Eckardt, Hans von. Ivan the Terrible. [1st American ed.]. Knopf, 1949.