Nizonkiza, Déogratias. “Quantifying Controlled Productive Knowledge of Collocations across Proficiency and Word Frequency Levels”. Studies in Second Language Learning and Teaching 2, no. 1 (October 1, 2012): 67–92. Accessed October 19, 2024. https://pressto.amu.edu.pl/index.php/ssllt/article/view/5001.