Original: Like many other authors from the Buffy TV show, he also contributed to the show's comic book version: he wrote three stories in the anthology Tales of the Slayers (including one featuring Melaka Fray from Fray) and also the main storyline of the five-issue miniseries Tales of the Vampires.
Simplified: He wrote the main storyline of the five-issue mini-series Tales of the Vampires and three stories in the Tales of the Slayers.