RICHTEROVÁ, Jana. The categories of grammar in resource-books of English for advanced learners. In: BADIO, Janusz (ed.). Categories and Units in Language and Linguistics. Lodz Studies in English and General LinguisticsPoland: Lodz University Press,2020. v. 10p. 129–145. DOI: 10.18778/8142-988-7.12. Disponível em: https://press.uni.lodz.pl/index.php/wul/catalog/book/342/chapter/931. Acesso em: 15 feb. 2026.