APA (7th ed.) Citation

London, J., Labor, E., Leitz, R. C., & Shepard, I. M. (1988). The letters of Jack London. Stanford University Press.

Chicago Style (17th ed.) Citation

London, Jack, Earle Labor, Robert C. Leitz, and I. Milo Shepard. The Letters of Jack London. Stanford, Calif.: Stanford University Press, 1988.

MLA (9th ed.) Citation

London, Jack, et al. The Letters of Jack London. Stanford University Press, 1988.