APA (7th ed.) Citation

Garrick, D., Little, D. M., & Kahrl, G. M. (1963). Letters. Belknap Press of Harvard University Press.

Chicago Style (17th ed.) Citation

Garrick, David, David Mason Little, and George Morrow Kahrl. Letters. Cambridge, Mass.: Belknap Press of Harvard University Press, 1963.

MLA (9th ed.) Citation

Garrick, David, et al. Letters. Belknap Press of Harvard University Press, 1963.