Title: Colloquial Polish: The Complete Course for Beginners / Edition 3, Author: Boleslaw Mazur
Title: The Routledge Intermediate Polish Reader: Polish through the press, internet and contemporary literature / Edition 1, Author: Aniela Grundy
Title: The Phonology of Polish, Author: Edmund Gussmann
Title: Polish: A Comprehensive Grammar / Edition 1, Author: Iwona Sadowska