The ultimate hitchhiker's guide to the galaxy
Douglas Adams
Dirk Gently's Holistic Detective Agency
The hitchhiker's guide to the galaxy
So Long, and Thanks for All the Fish
Life, the Universe and Everything
The Restaurant at the end of the universe
Mostly harmless
The long dark tea-time of the soul
The Ultimate Hitchhiker's Guide - All Six Books
Life, the Universe, and Everything
1. The Hitch Hikers Guide to Galaxy
HHGTTG - The Lost Chapters
The more than complete hitchhiker's guide: the hitchhiker's ...