APA (7th ed.) Citation

Twain, M., Wyeth, N. C., & Paine, A. B. (1916). The mysterious stranger: A romance. Harper & Brothers Publishers.

Chicago Style (17th ed.) Citation

Twain, Mark, N. C. Wyeth, and Albert Bigelow Paine. The Mysterious Stranger: A Romance. New York ; London: Harper & Brothers Publishers, 1916.

MLA (9th ed.) Citation

Twain, Mark, et al. The Mysterious Stranger: A Romance. Harper & Brothers Publishers, 1916.