APA (7th ed.) Citation

Vonnegut, K., & Wakefield, D. (2012). Kurt Vonnegut: Letters. Delacorte Press.

Chicago Style (17th ed.) Citation

Vonnegut, Kurt., and Dan Wakefield. Kurt Vonnegut: Letters. New York: Delacorte Press, 2012.

MLA (8th ed.) Citation

Vonnegut, Kurt., and Dan Wakefield. Kurt Vonnegut: Letters. Delacorte Press, 2012.