APA (7th ed.) Citation

Wilder, T., Wilder, R. G., & Bryer, J. R. (2008). The selected letters of Thornton Wilder. HarperCollins.

Chicago Style (17th ed.) Citation

Wilder, Thornton, Robin G. Wilder, and Jackson R. Bryer. The Selected Letters of Thornton Wilder. New York: HarperCollins, 2008.

MLA (9th ed.) Citation

Wilder, Thornton, et al. The Selected Letters of Thornton Wilder. HarperCollins, 2008.