APA (7th ed.) Citation

Thomas, E., Bottomley, G., & Thomas, R. G. (1968). Letters from Edward Thomas to Gordon Bottomley. Oxford U.P..

Chicago Style (17th ed.) Citation

Thomas, Edward, Gordon Bottomley, and R. George Thomas. Letters from Edward Thomas to Gordon Bottomley. London, New York [etc.]: Oxford U.P., 1968.

MLA (9th ed.) Citation

Thomas, Edward, et al. Letters from Edward Thomas to Gordon Bottomley. Oxford U.P., 1968.