National Library of Medicine. Medical subject headings: Suplement to index medicus.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Library of Medicine. Medical Subject Headings: Suplement to Index Medicus.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNational Library of Medicine. Medical Subject Headings: Suplement to Index Medicus.
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