http://e-repository.perpus.iainsalatiga.ac.id/11302
http://e-repository.perpus.iainsalatiga.ac.id/13609
http://e-repository.perpus.iainsalatiga.ac.id/13653
http://e-repository.perpus.iainsalatiga.ac.id/13276
http://e-repository.perpus.iainsalatiga.ac.id/13265