APA (7th ed.) Citation

Mencken, H. L. (1955). Heathen days: 1890 - 1936 (6. print.). Knopf.

Chicago Style (17th ed.) Citation

Mencken, Henry L. Heathen Days: 1890 - 1936. 6. print. New York: Knopf, 1955.

MLA (9th ed.) Citation

Mencken, Henry L. Heathen Days: 1890 - 1936. 6. print. Knopf, 1955.