MaciejM.RatajMaciejM., Attitudes to Standard British English and Standard Polish: A Study in Normative Linguistics and Comparative Sociolinguistics, Frankfurt am Main: Peter Lang, 2016 (Gdańsk studies in language 5), s. 11, DOI: 10.3726/978-3-653-05404-0, ISBN 978-3-653-05404-0, OCLC953657257(ang.).
filologia.su
Культура речи [online], filologia.su [dostęp 2019-01-09](ros.).
MaciejM.RatajMaciejM., Attitudes to Standard British English and Standard Polish: A Study in Normative Linguistics and Comparative Sociolinguistics, Frankfurt am Main: Peter Lang, 2016 (Gdańsk studies in language 5), s. 11, DOI: 10.3726/978-3-653-05404-0, ISBN 978-3-653-05404-0, OCLC953657257(ang.).
AnnaA.BerlińskaAnnaA., Teaching Mother Tongue Polish, [w:] WitoldW.Tulasiewicz, AnthonyA.Adams (red.), Teaching the Mother Tongue in a Multilingual Europe, London–New York: Continuum, 2005, s. 163–173, ISBN 978-0-8264-7027-0, OCLC232292774(ang.), patrz s. 167.