Allen, E. v. N. (1943). Specialties in medical practice. T. Nelson and sons.
Lua i Stíl Chicago (17ú heag.)Allen, Edgar van Nuys. Specialties in Medical Practice. New York, Edinburgh: T. Nelson and sons, 1943.
Lua MLA (8ú heag.)Allen, Edgar van Nuys. Specialties in Medical Practice. T. Nelson and sons, 1943.
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