Não informado. (1992). IEEE Annals of the History of Computing. IEEE Computer Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. IEEE Annals of the History of Computing. Los Alamitos, Calif: IEEE Computer Society, 1992.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. IEEE Annals of the History of Computing. IEEE Computer Society, 1992.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.