Rokoszewska KJ. Intra-individual Variability in the Emergence of Lexical Complexity in Speaking English at Secondary School: A Case Study of a Good, Average, and Poor Language Learner. TAPSLA [Internet]. 2020 Jun. 8 [cited 2026 Jan. 23];6(1):107-42. Available from: https://journals.us.edu.pl/index.php/TAPSLA/article/view/7929