“INCREASING ENGLISH SPEAKING SKILL THROUGH DISCUSSION (DEBATE) BY THE PROBLEM BASED INSTRUCTION (PBI) MODEL IN CLASS XII MIPA-1 MAN 2 WONOSOBO 2018/2019 ACADEMIC YEAR” (2022) CLLiENT (Culture, Literature, Linguistics, and English Teaching), 4(2), pp. 1–12. doi:10.32699/cllient.v4i2.4133.