http://e-repository.perpus.iainsalatiga.ac.id/13190
http://e-repository.perpus.iainsalatiga.ac.id/13512
http://e-repository.perpus.iainsalatiga.ac.id/12904
http://e-repository.perpus.iainsalatiga.ac.id/12594
http://e-repository.perpus.iainsalatiga.ac.id/13062