APA (7th ed.) Citation

Warren, R. P., Clark, W. B., Hendricks, R., & Perkins, J. A. (2000). Selected letters of Robert Penn Warren. Louisiana State University Press.

Chicago Style (17th ed.) Citation

Warren, Robert Penn, William Bedford Clark, Randy Hendricks, and James A. Perkins. Selected Letters of Robert Penn Warren. Baton Rouge: Louisiana State University Press, 2000.

MLA (9th ed.) Citation

Warren, Robert Penn, et al. Selected Letters of Robert Penn Warren. Louisiana State University Press, 2000.