The series was collected in a trade paper back at a later time.

The series was collected as a trade paperback in 2007.

The series was then collected as a trade paperback in June.

In March 2011, the series was collected into a trade paperback.

The series was collected as a trade paperback in July 1987.

The series was collected as a trade paperback in January 2008.

The series have been collected into a number of trade paperbacks.

The series was collected into a trade paperback in November, 2007.

This series and its end notes were collected by the same publisher in 2012.

The limited series ran for six issues and has since been collected into a trade paperback.