Rini Angreni Hasibuan, Syofyan Hadi, Rahmawati. The Effect of the numbered head together and pair check cooperative learning models for the understanding of grammar. lughawiyyat [Internet]. 2022 Oct. 13 [cited 2025 Jun. 14];5(2):103-16. Available from: https://ejournal.uiidalwa.ac.id/index.php/Lughawiyyat/article/view/1400