budiarto, budiarto 2018. THE IMPLEMENTATION OF COLLABORATIVE STRATEGY WITH INTEGRATED WRITING SKILLS IN ENGLISH LANGUAGE CLASSROOM AT MERCUBUANA UNIVERSITY. JELL (Journal of English Language and Literature) STIBA-IEC Jakarta. 2, 01 (Aug. 2018), 79-90. DOI:https://doi.org/10.37110/jell.v2i01.17.