http://e-repository.perpus.iainsalatiga.ac.id/12463
http://e-repository.perpus.iainsalatiga.ac.id/11809
http://e-repository.perpus.iainsalatiga.ac.id/10908
http://e-repository.perpus.iainsalatiga.ac.id/12002
http://e-repository.perpus.iainsalatiga.ac.id/12672