Baer, R., Baer, D., & McGonagle, R. (2011). The company we keep: A husband-and-wife true-life spy story. Random House Audio.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBaer, Robert, Dayna Baer, और Richard McGonagle. The Company We Keep: A Husband-and-wife True-life Spy Story. [New York]: Random House Audio, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBaer, Robert, et al. The Company We Keep: A Husband-and-wife True-life Spy Story. Random House Audio, 2011.
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