Não informado. (1927). Quarterly Cumulative Index Medicus. American Medical Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Quarterly Cumulative Index Medicus. Chicago, Ill: American Medical Association, 1927.
Lua MLA (8ú heag.)Não informado. Quarterly Cumulative Index Medicus. American Medical Association, 1927.
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