Humairah, K., N. Hasanah, Y. Silalahi, and J. Juliana. “The Analysis of Students’ Grammar Mastery in Tenses at SMK Sinar Husni Medan”. Edumaspul: Jurnal Pendidikan, Vol. 7, no. 2, Oct. 2023, pp. 5746-52, doi:10.33487/edumaspul.v7i2.7355.