Sztyber, Radosław. “The Envoy from Wallachia from Polish Camp [Poseł Z Wołoch Z Obozu Polskiego] – Polish Transitory Newspaper on Khotyn Battle in 1621 (minimonograph and Critical Reissue of the Written Relic)”. Filologia Polska. Roczniki Naukowe Uniwersytetu Zielonogórskiego, vol. 3, Dec. 2017, pp. 31-58, https://doi.org/10.34768/fp2017a1.