Fryde, E. B., review of Tadeusz Manteuffel, Andrew Gorski, The Formation of the Polish State: The Period of Ducal Rule, 963-1194, in Slavonic and East European Review, 61.3 (1983), pp. 444–45, doi:10.2307/4208715

Fryde, E. B., review of J. K. Fedorowicz, Maria Bogucka, Henryk Samsonowicz, A Republic of Nobles: Studies in Polish History to 1864, in Slavonic and East European Review, 61.4 (1983), pp. 617–18, doi:10.2307/4208772