Doughlas Adams. (1979). The Hitchhiker's Guide to the Galaxy. Pan Books.
Chicago Style (17th ed.) CitationDoughlas Adams. The Hitchhiker's Guide to the Galaxy. London: Pan Books, 1979.
MLA (9th ed.) CitationDoughlas Adams. The Hitchhiker's Guide to the Galaxy. Pan Books, 1979.
Warning: These citations may not always be 100% accurate.