RAMA SERIES (with Arthur C. Clarke)
Rama II ............................ 1989
The Garden of Rama ......................... 1991
Rama Revealed ......................... 1993
NON-FICTION
Cosmos: The Story of Cosmic Evolution, Science and Civilization (with Carl Sagan) ........ 1980
Rama: The Official Strategy Guide ......................... 1996
The History of the Twenty-First Century ................... 2001