Não informado. (1964). Influenza: An annotated bibliography. Library of the College of Physicians, Medical Documentation Service.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Influenza: An Annotated Bibliography. Philadelphia, Pa: Library of the College of Physicians, Medical Documentation Service, 1964.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Influenza: An Annotated Bibliography. Library of the College of Physicians, Medical Documentation Service, 1964.
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