Pelikan, J. (1971). The secret Vysocany Congress: Proceedings and documents .......of the Communist Party of Czechoslovakia 22 August 1968. Penguin Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPelikan, Jiri. The Secret Vysocany Congress: Proceedings and Documents .......of the Communist Party of Czechoslovakia 22 August 1968. Penguin Press, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPelikan, Jiri. The Secret Vysocany Congress: Proceedings and Documents .......of the Communist Party of Czechoslovakia 22 August 1968. Penguin Press, 1971.
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