PBS Distribution (Firm), Maxwell Martin, A., Stirling, R., Rundle, S., & Graham, J. (2014). The Bletchley circle. [Publisher not identified].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPBS Distribution (Firm), Anna Maxwell Martin, Rachael Stirling, Sophie Rundle, और Julie Graham. The Bletchley Circle. [United States]: [Publisher not identified], 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPBS Distribution (Firm), et al. The Bletchley Circle. [Publisher not identified], 2014.
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