Dziubalska-Kołaczyk, Katarzyna; Walczak, Bogdan. "Polish"(PDF). repozytorium.amu.edu.pl. Adam Mickiewicz University. pp. 1, 5. Archived from the original(PDF) on 2 February 2023. Retrieved 12 February 2023.
"kielbasa". The American Heritage Dictionary of the English Language (fourth ed.). Houghton Mifflin Company. 2000. Archived from the original on 30 June 2008. Retrieved 6 May 2009.
"Język polski". Towarzystwo Miłośników Języka Polskiego. 27 July 2000. Archived from the original on 27 September 2023. Retrieved 27 August 2020 – via Google Books.
Towarzystwo Miłośników Języka Polskiego (2006). Język polski (in Polish). Vol. 86. p. 228. Archived from the original on 7 April 2023. Retrieved 20 April 2021.
Brian D. Joseph (1999). Historical Linguistics. Ohio State University, Department of Linguistics. p. 165. Archived from the original on 27 April 2024. Retrieved 13 November 2019.
britannica.com
"Lekhitic languages". Encyclopædia Britannica. 8 January 2015. Archived from the original on 20 April 2012. Retrieved 31 March 2015.
Miklós Kontra, ed. (2000). "Special issue book reviews". Multilingua. 19 (1–2 Language contact in East–Central Europe). Mouton Publishers: 193. ISSN1613-3684. Archived from the original on 11 March 2020. Retrieved 6 September 2019.
Dziubalska-Kołaczyk, Katarzyna; Walczak, Bogdan (28 November 2018). "Polish". Revue belge de philologie et d'histoire. 88 (3): 817–840. doi:10.3406/rbph.2010.7805. S2CID240815177.
e-polish.eu
Knara, Izabela (6 October 2017). "Zapożyczenia w języku polskim". e-polish.eu (in Polish). Archived from the original on 28 November 2018. Retrieved 28 November 2018.
Prokop-Janiec, Eugenia (2013). Pogranicze Polsko-żydowskie(PDF) (in Polish). Kraków: Wydawnictwo Uniwersytetu Jagiellońskiego. p. 20. ISBN978-83-233-3507-8. Archived(PDF) from the original on 21 January 2021. Retrieved 18 January 2021.
"Język polski". Towarzystwo Miłośników Języka Polskiego. 27 July 2000. Archived from the original on 27 September 2023. Retrieved 27 August 2020 – via Google Books.
Prokop-Janiec, Eugenia (2013). Pogranicze Polsko-żydowskie(PDF) (in Polish). Kraków: Wydawnictwo Uniwersytetu Jagiellońskiego. p. 20. ISBN978-83-233-3507-8. Archived(PDF) from the original on 21 January 2021. Retrieved 18 January 2021.
Dziubalska-Kołaczyk, Katarzyna; Walczak, Bogdan. "Polish"(PDF). repozytorium.amu.edu.pl. Adam Mickiewicz University. pp. 1, 5. Archived from the original(PDF) on 2 February 2023. Retrieved 12 February 2023.
Magosic, Paul Robert (2005). "The Rusyn Question". Archived from the original on 11 October 2007. Retrieved 30 January 2008.
Miklós Kontra, ed. (2000). "Special issue book reviews". Multilingua. 19 (1–2 Language contact in East–Central Europe). Mouton Publishers: 193. ISSN1613-3684. Archived from the original on 11 March 2020. Retrieved 6 September 2019.
Towarzystwo Miłośników Języka Polskiego (2006). Język polski (in Polish). Vol. 86. p. 228. Archived from the original on 7 April 2023. Retrieved 20 April 2021.
Knara, Izabela (6 October 2017). "Zapożyczenia w języku polskim". e-polish.eu (in Polish). Archived from the original on 28 November 2018. Retrieved 28 November 2018.
"kielbasa". The American Heritage Dictionary of the English Language (fourth ed.). Houghton Mifflin Company. 2000. Archived from the original on 30 June 2008. Retrieved 6 May 2009.
Brian D. Joseph (1999). Historical Linguistics. Ohio State University, Department of Linguistics. p. 165. Archived from the original on 27 April 2024. Retrieved 13 November 2019.
Wronicz, Jadwiga. "Status gwary w języku polskim". Socjolingwistyka (in Polish). XXX. ISSN0208-6808.
Miklós Kontra, ed. (2000). "Special issue book reviews". Multilingua. 19 (1–2 Language contact in East–Central Europe). Mouton Publishers: 193. ISSN1613-3684. Archived from the original on 11 March 2020. Retrieved 6 September 2019.