APA (7th ed.) Citation

Byron, G. G. B., & Murray, J. (1821). Letter to **** ******: [John Murray] (2d ed.). John Murray.

Chicago Style (17th ed.) Citation

Byron, George Gordon Byron, and John Murray. Letter to **** ******: [John Murray]. 2d ed. London: John Murray, 1821.

MLA (9th ed.) Citation

Byron, George Gordon Byron, and John Murray. Letter to **** ******: [John Murray]. 2d ed. John Murray, 1821.