http://e-repository.perpus.iainsalatiga.ac.id/13116
http://e-repository.perpus.iainsalatiga.ac.id/12876
http://e-repository.perpus.iainsalatiga.ac.id/13145
http://e-repository.perpus.iainsalatiga.ac.id/13134
http://e-repository.perpus.iainsalatiga.ac.id/13292