Conrad, J., Poradowska, M., Gee, J. A., & Sturm, P. J. (1940). Letters of Joseph Conrad to Marguerite Poradowska, 1890-1920. Yale U.P..

Conrad, Joseph, Marguerite Poradowska, John Archer Gee, and Paul Jones Sturm. Letters of Joseph Conrad to Marguerite Poradowska, 1890-1920. New Haven: Yale U.P., 1940.

Conrad, Joseph, et al. Letters of Joseph Conrad to Marguerite Poradowska, 1890-1920. Yale U.P., 1940.