2022. The Effect of Learning Tenses Using Abbreviated Formulas on Students’ Grammar Mastery at the Takhasus grade of Mazro’atul Lughoh Islamic Boarding School Pare Kediri. English Teaching Journal and Research: Journal of English Education, Literature, And Linguistics. 2, 1 (Jun. 2022), 62–80. DOI:https://doi.org/10.55148/etjar.v2i1.286.