International Congress of Slavists, 5th, Sofia, 1963. (1963). Dutch contributions to the Fifth International Congress of Slavicists. Mouton.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInternational Congress of Slavists, 5th, Sofia, 1963. Dutch Contributions to the Fifth International Congress of Slavicists. Hague: Mouton, 1963.
एमएलए (9वां संस्करण) प्रशस्ति पत्रInternational Congress of Slavists, 5th, Sofia, 1963. Dutch Contributions to the Fifth International Congress of Slavicists. Mouton, 1963.
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