APA (7th ed.) Citation

Adams, D. (1981). The restaurant at the end of the universe (1st American ed.). Harmony Books.

Chicago Style (17th ed.) Citation

Adams, Douglas. The Restaurant at the End of the Universe. 1st American ed. New York: Harmony Books, 1981.

MLA (8th ed.) Citation

Adams, Douglas. The Restaurant at the End of the Universe. 1st American ed. Harmony Books, 1981.

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