APA (7th ed.) Citation

Campbell, L. G. G. (1877). Log letters from "The Challenger" (2nd ed. rev.). Macmillan.

Chicago Style (17th ed.) Citation

Campbell, Lord George Granville. Log Letters from "The Challenger". 2nd ed. rev. London: Macmillan, 1877.

MLA (9th ed.) Citation

Campbell, Lord George Granville. Log Letters from "The Challenger". 2nd ed. rev. Macmillan, 1877.