Rofiq, Ainur. “AR EFEKTIFITAS PENGEMBANGAN PERANGKAT PEMBELAJARAN BERBASIS PROBLEM BASED LEARNING DAN PENGUATAN PENDIDIKAN KARAKTER TERHADAP PRESTASI SISWA DI SMA SE-KECAMATAN MENGANTI GRESIK: Problem Based Learning, Pendidikan Karakter Dan Prestasi Siswa”. Journal of Education Management and Learning, vol. 2, no. 1, June 2019, pp. 1-9, https://journal.unigres.ac.id/index.php/jemal/article/view/1487.