A. Maciąg-Fiedler, “Michał Głuszkowski: Code-switching and code-mixing in the conditions of Slavic-Slavic language contact. Vershina – a unique Polish language island in Siberia, Wydawnictwo Naukowe Uniwersytetu Mikołaja Kopernika, Toruń 2024, pp. 252”, PJUWM, vol. 28, no. 3, pp. 319–324, Sep. 2026.