APA (7th ed.) Citation

Twain, M., & Beaver, H. (1962). Life on the Mississippi. Oxford University Press.

Chicago Style (17th ed.) Citation

Twain, Mark, and Harold Beaver. Life on the Mississippi. London [etc.]: Oxford University Press, 1962.

MLA (9th ed.) Citation

Twain, Mark, and Harold Beaver. Life on the Mississippi. Oxford University Press, 1962.