APA (7th ed.) Citation

Adams, D. (2009). The Hitchhiker's guide to the galaxy. Pan Books.

Chicago Style (17th ed.) Citation

Adams, Douglas. The Hitchhiker's Guide to the Galaxy. London: Pan Books, 2009.

MLA (8th ed.) Citation

Adams, Douglas. The Hitchhiker's Guide to the Galaxy. Pan Books, 2009.

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