http://e-repository.perpus.iainsalatiga.ac.id/8580
http://e-repository.perpus.iainsalatiga.ac.id/11034
http://e-repository.perpus.iainsalatiga.ac.id/11673
http://e-repository.perpus.iainsalatiga.ac.id/12097
http://e-repository.perpus.iainsalatiga.ac.id/11592