Adams Douglas. (2002). Ultimate Hitchhikers Guide to the Galaxy. Ballantine Books.
芝加哥风格引文Adams Douglas. Ultimate Hitchhikers Guide to the Galaxy. New York: Ballantine Books, 2002.
MLA引文Adams Douglas. Ultimate Hitchhikers Guide to the Galaxy. Ballantine Books, 2002.
警告：这些引文格式不一定是100％准确.