Template: RefTNG123
From Trekipedia
Roddenberry, Gene (Executive Producer) & Berman, Rick & Hurley, Maurice (Co-Executive Producers). "Symbiosis." Star Trek: The Next Generation, Season 1, Episode 22 (Production 123). Directed by Win Phelps. Story by Robert Lewin. Teleplay by Robert Lewin & Richard Manning & Hans Beimler. Paramount Pictures Corporation, 18 April 1988.