APA (7th ed.) Citation

Nicolson, H. (1949). Benjamin Constant ([1st American ed.].). Doubleday.

Chicago Style (17th ed.) Citation

Nicolson, Harold. Benjamin Constant. [1st American ed.]. Garden City, N. Y.: Doubleday, 1949.

MLA (9th ed.) Citation

Nicolson, Harold. Benjamin Constant. [1st American ed.]. Doubleday, 1949.