Cita APA (7a ed.)

Twain, M. (1995). The man that corrupted Hadleyburg. Penguin books.

Cita Chicago Style (17a ed.)

Twain, Mark. The Man That Corrupted Hadleyburg. New York [etc.]: Penguin books, 1995.

Cita MLA (9a ed.)

Twain, Mark. The Man That Corrupted Hadleyburg. Penguin books, 1995.