Cros, L. (1968). Correspondence tuition in France in connection with other media and the development of permanent education: Report. Council of Europe.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCros, Louis. Correspondence Tuition in France in Connection with Other Media and the Development of Permanent Education: Report. Strasbourg: Council of Europe, 1968.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCros, Louis. Correspondence Tuition in France in Connection with Other Media and the Development of Permanent Education: Report. Council of Europe, 1968.
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