APA (7th ed.) Citation

Twain, M. (1994). The adventures of Tom Sawyer. Penguin Books.

Chicago Style (17th ed.) Citation

Twain, Mark. The Adventures of Tom Sawyer. London: Penguin Books, 1994.

MLA (9th ed.) Citation

Twain, Mark. The Adventures of Tom Sawyer. Penguin Books, 1994.

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