http://e-repository.perpus.iainsalatiga.ac.id/13760
http://e-repository.perpus.iainsalatiga.ac.id/13642
http://e-repository.perpus.iainsalatiga.ac.id/13618
http://e-repository.perpus.iainsalatiga.ac.id/13613
http://e-repository.perpus.iainsalatiga.ac.id/13394