Wahyuni, S. 2017. Students’ Ability in Writing Hortatory Exposition of Eleventh Grade Students at SMAN 14 Pekanbaru. J-SHMIC : Journal of English for Academic. 4, 2 (Sep. 2017), 87–93. DOI:https://doi.org/10.25299/jshmic.2017.vol4(2).537.