Who is the company that released the album on 2008-09-18 18 September 2008?
CREATE TABLE "list_of_doctor_who_audio_releases" (
  "title" text,
  "writer" text,
  "format" text,
  "company" text,
  "release_date" text
);
SELECT "company" FROM "list_of_doctor_who_audio_releases" WHERE "release_date"='2008-09-18 18 september 2008';