Twain, M., & DeVoto, B. (1974). Letters from the Earth. Harper & Row.
Chicago Style (17th ed.) CitationTwain, Mark, and Bernard DeVoto. Letters from the Earth. New York: Harper & Row, 1974.
MLA (8th ed.) CitationTwain, Mark, and Bernard DeVoto. Letters from the Earth. Harper & Row, 1974.
Warning: These citations may not always be 100% accurate.