APA (7th ed.) Citation
Sheehy, D. G., Richardson, M., & Faggen, R. (2014). The letters of Robert Frost. Belknap Press of Harvard University Press.
Chicago Style (17th ed.) Citation
Sheehy, Donald Gerard, Mark Richardson, and Robert Faggen. The Letters of Robert Frost. Cambridge, Massachusetts ; London, England: Belknap Press of Harvard University Press, 2014.
MLA (9th ed.) Citation
Sheehy, Donald Gerard, et al. The Letters of Robert Frost. Belknap Press of Harvard University Press, 2014.
Warning: These citations may not always be 100% accurate.