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.
Chicago Style (17th ed.) CitationClark, William, Jonathan Clark, and 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.
MLA (8th ed.) CitationClark, William, et al. Dear Brother: Letters of William Clark to Jonathan Clark. Yale University Press, in association with the Filson Historical Society, 2002.
Warning: These citations may not always be 100% accurate.