Riwayatiningsih, R.-. “IMPLEMENTING PROCESS WRITING APPROACH TO IMPROVE THE WRITING SKILL OF THE SECOND SEMESTER STUDENTS OF NUSANTARA PGRI KEDIRI UNIVERSITY”. Nusantara of Research : Jurnal Hasil-Hasil Penelitian Universitas Nusantara PGRI Kediri, Vol. 2, no. 1, Apr. 2015, https://ojs.unpkediri.ac.id/index.php/efektor/article/view/74.