Template: RefDSN458
From Trekipedia
Berman, Rick et al (Executive Producers). "Past Tense, Part II". Star Trek: Deep Space Nine, season 3, episode 12 (Production number 458). Directed by Jonathan Frakes. Story by Ira Steven Behr & Robert Hewitt Wolfe. Teleplay by Ira Steven Behr & René Echevarria. Paramount Pictures. 9 January 1995.