Template: RefDSN520
From Trekipedia
Berman, Rick & Ira Steven Behr (Executive Producers). "Children of Time". Star Trek: Deep Space Nine, season 5, episode 22 (Production number 520). Directed by Allan Kroeker. Story by Gary Holland and Ethan H. Calk. Teleplay by René Echevarria. Paramount Pictures. 5 May 1997.