http://e-repository.perpus.iainsalatiga.ac.id/8416
http://e-repository.perpus.iainsalatiga.ac.id/9222
http://e-repository.perpus.iainsalatiga.ac.id/9603
http://e-repository.perpus.iainsalatiga.ac.id/10444
http://e-repository.perpus.iainsalatiga.ac.id/10415