ELWOOD, J. M. (2000). Critical appraisal of epidemiological studies and clinical trials (Ed.2.). Oxford University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रELWOOD, J. Mark. Critical Appraisal of Epidemiological Studies and Clinical Trials. Ed.2. Oxford: Oxford University Press, 2000.
एमएलए (9वां संस्करण) प्रशस्ति पत्रELWOOD, J. Mark. Critical Appraisal of Epidemiological Studies and Clinical Trials. Ed.2. Oxford University Press, 2000.
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