Clark, W., Clark, J., & Holmberg, J. J. (2002). Dear brother: Letters of William Clark to Jonathan Clark. Yale University Press, in association with the Filson Historical Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रClark, William, Jonathan Clark, और James J. Holmberg. Dear Brother: Letters of William Clark to Jonathan Clark. New Haven: Yale University Press, in association with the Filson Historical Society, 2002.
एमएलए (8वां संस्करण) प्रशस्ति पत्रClark, William, et al. Dear Brother: Letters of William Clark to Jonathan Clark. Yale University Press, in association with the Filson Historical Society, 2002.
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