APA (7th ed.) Citation

PBS Distribution (Firm), Maxwell Martin, A., Stirling, R., Rundle, S., & Graham, J. (2014). The Bletchley circle. [Publisher not identified].

Chicago Style (17th ed.) Citation

PBS Distribution (Firm), Anna Maxwell Martin, Rachael Stirling, Sophie Rundle, and Julie Graham. The Bletchley Circle. [United States]: [Publisher not identified], 2014.

MLA (8th ed.) Citation

PBS Distribution (Firm), et al. The Bletchley Circle. [Publisher not identified], 2014.

Warning: These citations may not always be 100% accurate.