Não informado. (1897). Pennsylvania Medical Journal. Medical Society of the State of Pennsylvania.
Lua i Stíl Chicago (17ú heag.)Não informado. Pennsylvania Medical Journal. Harrisburg, Pa: Medical Society of the State of Pennsylvania, 1897.
Lua MLA (8ú heag.)Não informado. Pennsylvania Medical Journal. Medical Society of the State of Pennsylvania, 1897.
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