Zainurrahman, Z. 2016. Communicator Authenticity and Writing Motivation of University Students on Social Medium. Gramatika: Jurnal Ilmiah Kebahasaan dan Kesastraan. 4, 2 (Dec. 2016), 108-118. DOI:https://doi.org/10.31813/gramatika/4.2.2016.83.108--118.