Coleman, R. F., Parker, R. B., & Naughton, J. (2019). Robert B. Parker's The bitterest pill (Unabridged.). Random House Audio, an imprint of the Penguin Random House Publishing Group.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रColeman, Reed Farrel, Robert B. Parker, और James Naughton. Robert B. Parker's The Bitterest Pill. Unabridged. New York, New York: Random House Audio, an imprint of the Penguin Random House Publishing Group, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रColeman, Reed Farrel, et al. Robert B. Parker's The Bitterest Pill. Unabridged. Random House Audio, an imprint of the Penguin Random House Publishing Group, 2019.
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