Harpole, J. (1940). Behind the surgeon's mask. Frederick A. Stokes company.
Lua i Stíl Chicago (17ú heag.)Harpole, James. Behind the Surgeon's Mask. New York: Frederick A. Stokes company, 1940.
Lua MLA (8ú heag.)Harpole, James. Behind the Surgeon's Mask. Frederick A. Stokes company, 1940.
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