APA (7th ed.) Citation

Twain, M., Peck, R., & Reed, N. (2008). The adventures of Tom Sawyer. Puffin Books.

Chicago Style (17th ed.) Citation

Twain, Mark, Richard Peck, and Neil Reed. The Adventures of Tom Sawyer. London: Puffin Books, 2008.

MLA (8th ed.) Citation

Twain, Mark, et al. The Adventures of Tom Sawyer. Puffin Books, 2008.