APA (7th ed.) Citation

Ickes, H. L. (1953). The secret diary of Harold L. Ickes. Simon and Schuster.

Chicago Style (17th ed.) Citation

Ickes, Harold L. The Secret Diary of Harold L. Ickes. New York: Simon and Schuster, 1953.

MLA (9th ed.) Citation

Ickes, Harold L. The Secret Diary of Harold L. Ickes. Simon and Schuster, 1953.