Schafer. The Business of Private Medical Practice. Rutgers University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSchafer. The Business of Private Medical Practice. Rutgers University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSchafer. The Business of Private Medical Practice. Rutgers University Press.
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