APA (7th ed.) Citation

Twain, M. (1984). The adventures of Huckleberry Finn. Puffin books.

Chicago Style (17th ed.) Citation

Twain, Mark. The Adventures of Huckleberry Finn. London [etc.]: Puffin books, 1984.

MLA (9th ed.) Citation

Twain, Mark. The Adventures of Huckleberry Finn. Puffin books, 1984.

Warning: These citations may not always be 100% accurate.