http://e-repository.perpus.iainsalatiga.ac.id/11749
http://e-repository.perpus.iainsalatiga.ac.id/11698
http://e-repository.perpus.iainsalatiga.ac.id/10727
http://e-repository.perpus.iainsalatiga.ac.id/10850
http://e-repository.perpus.iainsalatiga.ac.id/10914