APA (7th ed.) Citation

Miller, H., Nin, A., & Stuhlmann, G. (1965). Letters to Anais Nin. Putnam.

Chicago Style (17th ed.) Citation

Miller, Henry, Anais Nin, and Gunther Stuhlmann. Letters to Anais Nin. New York: Putnam, 1965.

MLA (9th ed.) Citation

Miller, Henry, et al. Letters to Anais Nin. Putnam, 1965.