The series is being collected into a number of volumes:

The series is being collected into a number of trade paperbacks:

The series has been collected into a number of volumes:

Tank Girl has been collected into a number of trade paperbacks over the years.

The various releases are being collected into a number of trade paperbacks.

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

The series was collected into a number of trade paperbacks:

His stories have been collected into a number of volumes:

The story has been collecting into a number of volumes:

The series has been collected into a number of trade paperbacks and a hardcover limited edition.