9780345341389 | Ballantine Books, January 1, 1990, cover price $4.95 | also contains Halfway Perfect | About this edition: An alien armada of Zentraedi spaceships intend to destroy the Earth unless the Super Dimensional Fortress, SDF-1, can stop them

9780345363114 | Del Rey, December 1, 1989, cover price $5.99 | About this edition: This conclusion to the seventeen-novel series provides long-awaited answers to whether the SDF-3 has actually been destroyed, where is the Regis, what has happened to Haydon IV, and what is Marlene/Ariel: human or Invid

9780345353016 | Reissue edition (Ballantine Books, November 1, 1989), cover price $4.99 | About this edition: Stranded on the far side of the galaxy, the Robotech Expeditionary Force forms an alliance with the strange beings aboard a previously unencountered starship and attempt to renew their challenge to the Invid Regent and his forces

9780345353023 | Reissue edition (Ballantine Books, June 1, 1988), cover price $4.95

9780345350633 | Reprint edition (Ballantine Books, April 1, 1988), cover price $11.80 | also contains Mastering 'metrics: The Path from Cause to Effect

9780345341396 | Reissue edition (Ballantine Books, June 1, 1987), cover price $4.95 | also contains Rebels by Accident | About this edition: The Robotech defenders and the Zentraedi, former enemies, share the common goal of survival after the war ended with no victors, but the aliens begin to revert to their warlike ways when Khyron, a reborn hero, reappears to lead them

9780345341334 | Ballantine Books, March 1, 1987, cover price $5.99 | About this edition: The arrival on Earth of an abandoned alien battle fortress saves humankind from extinction during the Global Civil War, but the untried Robotech Defense Force must now defend humanity against the most feared conquerors in the universe

9780345341341 | Reissue edition (Ballantine Books, March 1, 1987), cover price $4.95 | also contains Behind Every Great Man: The Forgotten Women Behind the World's Famous and Infamous | About this edition: Henry J.