APA (7th ed.) Citation

Mencken, H. L., & Forgue, G. J. (1961). Letters of H. L. Mencken. Knopf.

Chicago Style (17th ed.) Citation

Mencken, Henry L., and Guy Jean Forgue. Letters of H. L. Mencken. New York: Knopf, 1961.

MLA (9th ed.) Citation

Mencken, Henry L., and Guy Jean Forgue. Letters of H. L. Mencken. Knopf, 1961.