APA (7th ed.) Citation

Paul Jennings. (1991). Unmentionable! Puffin Books.

Chicago Style (17th ed.) Citation

Paul Jennings. Unmentionable! England: Puffin Books, 1991.

MLA (9th ed.) Citation

Paul Jennings. Unmentionable! Puffin Books, 1991.

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