The adventures of Huckleberry Finn (Tom Sawyer's comrade),
by Mark Twain.

APA Citation

Twain, M. (1931). The adventures of Huckleberry Finn (Tom Sawyer's comrade). New ed. New York: Harper & Row.

MLA Citation

Twain, Mark, 1835-1910. The Adventures of Huckleberry Finn (Tom Sawyer's Comrade). New ed. New York: Harper & Row, 1931.

Warning: These citations may not always be complete (especially for serials).