APA (7th ed.) Citation

Content Television, World Productions (Firm : London, England), PBS Distribution (Firm), Payne, J., Harding, S., Hopkins, T., . . . Graham, J. (2014). The Bletchley circle. [Publisher not identified].

Chicago Style (17th ed.) Citation

Content Television, et al. The Bletchley Circle. [United States]: [Publisher not identified], 2014.

MLA (9th ed.) Citation

Content Television, et al. The Bletchley Circle. [Publisher not identified], 2014.