http://e-repository.perpus.iainsalatiga.ac.id/13426
http://e-repository.perpus.iainsalatiga.ac.id/13190
http://e-repository.perpus.iainsalatiga.ac.id/13235
http://e-repository.perpus.iainsalatiga.ac.id/13267
http://e-repository.perpus.iainsalatiga.ac.id/13273