Selvam S.K. Distance Education For National Development. APH Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSelvam S.K. Distance Education For National Development. APH Publishing.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSelvam S.K. Distance Education For National Development. APH Publishing.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.